feature: Text-In-Voice (#2269)

* Initial implementation

* Remove blocking webhooks

* add safeguard for tiv

* fix tests

src/Discord.Net.Core/Entities/Channels/IVoiceChannel.cs

@@ -6,7 +6,7 @@ namespace Discord
     /// <summary>
     ///     Represents a generic voice channel in a guild.
     /// </summary>
-    public interface IVoiceChannel : INestedChannel, IAudioChannel, IMentionable
+    public interface IVoiceChannel : IMessageChannel, INestedChannel, IAudioChannel, IMentionable
     {
         /// <summary>
         ///     Gets the bit-rate that the clients in this voice channel are requested to use.

src/Discord.Net.Rest/Entities/Channels/RestStageChannel.cs

@@ -12,7 +12,11 @@ namespace Discord.Rest
     public class RestStageChannel : RestVoiceChannel, IStageChannel
     {
         /// <inheritdoc/>
-        public string Topic { get; private set; }
+        /// <remarks>
+        ///     This field is always false for stage channels.
+        /// </remarks>
+        public override bool IsTextInVoice
+            => false;
 
         /// <inheritdoc/>
         public StagePrivacyLevel? PrivacyLevel { get; private set; }
@@ -37,13 +41,11 @@ namespace Discord.Rest
             IsLive = isLive;
             if(isLive)
             {
-                Topic = model.Topic;
                 PrivacyLevel = model.PrivacyLevel;
                 IsDiscoverableDisabled = model.DiscoverableDisabled;
             }
             else
             {
-                Topic = null;
                 PrivacyLevel = null;
                 IsDiscoverableDisabled = null;
             }

src/Discord.Net.Rest/Entities/Channels/RestTextChannel.cs

@@ -86,25 +86,25 @@ namespace Discord.Rest
             => ChannelHelper.GetUsersAsync(this, Guild, Discord, null, null, options);
 
         /// <inheritdoc />
-        public Task<RestMessage> GetMessageAsync(ulong id, RequestOptions options = null)
+        public virtual Task<RestMessage> GetMessageAsync(ulong id, RequestOptions options = null)
             => ChannelHelper.GetMessageAsync(this, Discord, id, options);
         /// <inheritdoc />
-        public IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
+        public virtual IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
             => ChannelHelper.GetMessagesAsync(this, Discord, null, Direction.Before, limit, options);
         /// <inheritdoc />
-        public IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(ulong fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
+        public virtual IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(ulong fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
             => ChannelHelper.GetMessagesAsync(this, Discord, fromMessageId, dir, limit, options);
         /// <inheritdoc />
-        public IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(IMessage fromMessage, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
+        public virtual IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(IMessage fromMessage, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
             => ChannelHelper.GetMessagesAsync(this, Discord, fromMessage.Id, dir, limit, options);
         /// <inheritdoc />
-        public Task<IReadOnlyCollection<RestMessage>> GetPinnedMessagesAsync(RequestOptions options = null)
+        public virtual Task<IReadOnlyCollection<RestMessage>> GetPinnedMessagesAsync(RequestOptions options = null)
             => ChannelHelper.GetPinnedMessagesAsync(this, Discord, options);
 
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendMessageAsync(string text = null, bool isTTS = false, Embed embed = null, 
+        public virtual Task<RestUserMessage> SendMessageAsync(string text = null, bool isTTS = false, Embed embed = null, 
             RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null,
             MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
             => ChannelHelper.SendMessageAsync(this, Discord, text, isTTS, embed, allowedMentions, messageReference, 
@@ -136,7 +136,7 @@ namespace Discord.Rest
         /// <exception cref="IOException">An I/O error occurred while opening the file.</exception>
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, 
+        public virtual Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, 
             RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null, 
             MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, 
             Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
@@ -146,7 +146,7 @@ namespace Discord.Rest
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, 
+        public virtual Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, 
             Embed embed = null, RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null, 
             MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, 
             Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
@@ -156,7 +156,7 @@ namespace Discord.Rest
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(FileAttachment attachment, string text, bool isTTS = false, 
+        public virtual Task<RestUserMessage> SendFileAsync(FileAttachment attachment, string text, bool isTTS = false, 
             Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, 
             MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, 
             Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
@@ -166,35 +166,35 @@ namespace Discord.Rest
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendFilesAsync(IEnumerable<FileAttachment> attachments, string text, bool isTTS = false, 
+        public virtual Task<RestUserMessage> SendFilesAsync(IEnumerable<FileAttachment> attachments, string text, bool isTTS = false, 
             Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, 
             MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, 
             Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
             => ChannelHelper.SendFilesAsync(this, Discord, attachments, text, isTTS, embed, allowedMentions, messageReference, components, stickers, options, embeds, flags);
 
         /// <inheritdoc />
-        public Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
+        public virtual Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
             => ChannelHelper.DeleteMessageAsync(this, messageId, Discord, options);
         /// <inheritdoc />
-        public Task DeleteMessageAsync(IMessage message, RequestOptions options = null)
+        public virtual Task DeleteMessageAsync(IMessage message, RequestOptions options = null)
             => ChannelHelper.DeleteMessageAsync(this, message.Id, Discord, options);
 
         /// <inheritdoc />
-        public Task DeleteMessagesAsync(IEnumerable<IMessage> messages, RequestOptions options = null)
+        public virtual Task DeleteMessagesAsync(IEnumerable<IMessage> messages, RequestOptions options = null)
             => ChannelHelper.DeleteMessagesAsync(this, Discord, messages.Select(x => x.Id), options);
         /// <inheritdoc />
-        public Task DeleteMessagesAsync(IEnumerable<ulong> messageIds, RequestOptions options = null)
+        public virtual Task DeleteMessagesAsync(IEnumerable<ulong> messageIds, RequestOptions options = null)
             => ChannelHelper.DeleteMessagesAsync(this, Discord, messageIds, options);
 
         /// <inheritdoc />
-        public async Task<IUserMessage> ModifyMessageAsync(ulong messageId, Action<MessageProperties> func, RequestOptions options = null)
+        public virtual async Task<IUserMessage> ModifyMessageAsync(ulong messageId, Action<MessageProperties> func, RequestOptions options = null)
             => await ChannelHelper.ModifyMessageAsync(this, messageId, func, Discord, options).ConfigureAwait(false);
 
         /// <inheritdoc />
-        public Task TriggerTypingAsync(RequestOptions options = null)
+        public virtual Task TriggerTypingAsync(RequestOptions options = null)
             => ChannelHelper.TriggerTypingAsync(this, Discord, options);
         /// <inheritdoc />
-        public IDisposable EnterTypingState(RequestOptions options = null)
+        public virtual IDisposable EnterTypingState(RequestOptions options = null)
             => ChannelHelper.EnterTypingState(this, Discord, options);
 
         /// <summary>
@@ -232,38 +232,6 @@ namespace Discord.Rest
             => ChannelHelper.GetWebhooksAsync(this, Discord, options);
 
         /// <summary>
-        ///     Gets the parent (category) channel of this channel.
-        /// </summary>
-        /// <param name="options">The options to be used when sending the request.</param>
-        /// <returns>
-        ///     A task that represents the asynchronous get operation. The task result contains the category channel
-        ///     representing the parent of this channel; <c>null</c> if none is set.
-        /// </returns>
-        public virtual Task<ICategoryChannel> GetCategoryAsync(RequestOptions options = null)
-            => ChannelHelper.GetCategoryAsync(this, Discord, options);
-        /// <inheritdoc />
-        public Task SyncPermissionsAsync(RequestOptions options = null)
-            => ChannelHelper.SyncPermissionsAsync(this, Discord, options);
-        #endregion
-
-        #region Invites
-        /// <inheritdoc />
-        public virtual async Task<IInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, options).ConfigureAwait(false);
-        public virtual async Task<IInviteMetadata> CreateInviteToApplicationAsync(ulong applicationId, int? maxAge = 86400, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteToApplicationAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, applicationId, options);
-        /// <inheritdoc />
-        public virtual async Task<IInviteMetadata> CreateInviteToApplicationAsync(DefaultApplications application, int? maxAge = 86400, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteToApplicationAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, (ulong)application, options);
-        public virtual Task<IInviteMetadata> CreateInviteToStreamAsync(IUser user, int? maxAge, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => throw new NotImplementedException();
-        /// <inheritdoc />
-        public virtual async Task<IReadOnlyCollection<IInviteMetadata>> GetInvitesAsync(RequestOptions options = null)
-            => await ChannelHelper.GetInvitesAsync(this, Discord, options).ConfigureAwait(false);
-
-        private string DebuggerDisplay => $"{Name} ({Id}, Text)";
-
-        /// <summary>
         ///     Creates a thread within this <see cref="ITextChannel"/>.
         /// </summary>
         /// <remarks>
@@ -299,6 +267,38 @@ namespace Discord.Rest
             var model = await ThreadHelper.CreateThreadAsync(Discord, this, name, type, autoArchiveDuration, message, invitable, slowmode, options);
             return RestThreadChannel.Create(Discord, Guild, model);
         }
+
+        /// <summary>
+        ///     Gets the parent (category) channel of this channel.
+        /// </summary>
+        /// <param name="options">The options to be used when sending the request.</param>
+        /// <returns>
+        ///     A task that represents the asynchronous get operation. The task result contains the category channel
+        ///     representing the parent of this channel; <c>null</c> if none is set.
+        /// </returns>
+        public virtual Task<ICategoryChannel> GetCategoryAsync(RequestOptions options = null)
+            => ChannelHelper.GetCategoryAsync(this, Discord, options);
+        /// <inheritdoc />
+        public Task SyncPermissionsAsync(RequestOptions options = null)
+            => ChannelHelper.SyncPermissionsAsync(this, Discord, options);
+        #endregion
+
+        #region Invites
+        /// <inheritdoc />
+        public virtual async Task<IInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
+            => await ChannelHelper.CreateInviteAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, options).ConfigureAwait(false);
+        public virtual async Task<IInviteMetadata> CreateInviteToApplicationAsync(ulong applicationId, int? maxAge = 86400, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
+            => await ChannelHelper.CreateInviteToApplicationAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, applicationId, options);
+        /// <inheritdoc />
+        public virtual async Task<IInviteMetadata> CreateInviteToApplicationAsync(DefaultApplications application, int? maxAge = 86400, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
+            => await ChannelHelper.CreateInviteToApplicationAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, (ulong)application, options);
+        public virtual Task<IInviteMetadata> CreateInviteToStreamAsync(IUser user, int? maxAge, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
+            => throw new NotImplementedException();
+        /// <inheritdoc />
+        public virtual async Task<IReadOnlyCollection<IInviteMetadata>> GetInvitesAsync(RequestOptions options = null)
+            => await ChannelHelper.GetInvitesAsync(this, Discord, options).ConfigureAwait(false);
+
+        private string DebuggerDisplay => $"{Name} ({Id}, Text)";
         #endregion
 
         #region ITextChannel

src/Discord.Net.Rest/Entities/Channels/RestVoiceChannel.cs

@@ -2,6 +2,7 @@ using Discord.Audio;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using Model = Discord.API.Channel;
@@ -12,21 +13,21 @@ namespace Discord.Rest
     ///     Represents a REST-based voice channel in a guild.
     /// </summary>
     [DebuggerDisplay(@"{DebuggerDisplay,nq}")]
-    public class RestVoiceChannel : RestGuildChannel, IVoiceChannel, IRestAudioChannel
+    public class RestVoiceChannel : RestTextChannel, IVoiceChannel, IRestAudioChannel
     {
         #region RestVoiceChannel
+        /// <summary>
+        ///     Gets whether or not the guild has Text-In-Voice enabled and the voice channel is a TiV channel.
+        /// </summary>
+        public virtual bool IsTextInVoice
+            => Guild.Features.HasTextInVoice;
         /// <inheritdoc />
         public int Bitrate { get; private set; }
         /// <inheritdoc />
         public int? UserLimit { get; private set; }
-        /// <inheritdoc />
-        public ulong? CategoryId { get; private set; }
         /// <inheritdoc/>
         public string RTCRegion { get; private set; }
 
-        /// <inheritdoc />
-        public string Mention => MentionUtils.MentionChannel(Id);
-
         internal RestVoiceChannel(BaseDiscordClient discord, IGuild guild, ulong id)
             : base(discord, guild, id)
         {
@@ -41,7 +42,6 @@ namespace Discord.Rest
         internal override void Update(Model model)
         {
             base.Update(model);
-            CategoryId = model.CategoryId;
 
             if(model.Bitrate.IsSpecified)
                 Bitrate = model.Bitrate.Value;
@@ -59,41 +59,185 @@ namespace Discord.Rest
             Update(model);
         }
 
-        /// <summary>
-        ///     Gets the parent (category) channel of this channel.
-        /// </summary>
-        /// <param name="options">The options to be used when sending the request.</param>
-        /// <returns>
-        ///     A task that represents the asynchronous get operation. The task result contains the category channel
-        ///     representing the parent of this channel; <c>null</c> if none is set.
-        /// </returns>
-        public Task<ICategoryChannel> GetCategoryAsync(RequestOptions options = null)
-            => ChannelHelper.GetCategoryAsync(this, Discord, options);
-        /// <inheritdoc />
-        public Task SyncPermissionsAsync(RequestOptions options = null)
-            => ChannelHelper.SyncPermissionsAsync(this, Discord, options);
-        #endregion
+        /// <inheritdoc/>
+        /// <exception cref="InvalidOperationException">Cannot modify text channel properties of a voice channel.</exception>
+        public override Task ModifyAsync(Action<TextChannelProperties> func, RequestOptions options = null)
+            => throw new InvalidOperationException("Cannot modify text channel properties of a voice channel");
 
-        #region Invites
-        /// <inheritdoc />
-        public async Task<IInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, options).ConfigureAwait(false);
-        /// <inheritdoc />
-        public async Task<IInviteMetadata> CreateInviteToApplicationAsync(ulong applicationId, int? maxAge, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteToApplicationAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, applicationId, options).ConfigureAwait(false);
-        /// <inheritdoc />
-        public virtual async Task<IInviteMetadata> CreateInviteToApplicationAsync(DefaultApplications application, int? maxAge = 86400, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteToApplicationAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, (ulong)application, options);
-        /// <inheritdoc />
-        public async Task<IInviteMetadata> CreateInviteToStreamAsync(IUser user, int? maxAge, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteToStreamAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, user, options).ConfigureAwait(false);
-        /// <inheritdoc />
-        public async Task<IReadOnlyCollection<IInviteMetadata>> GetInvitesAsync(RequestOptions options = null)
-            => await ChannelHelper.GetInvitesAsync(this, Discord, options).ConfigureAwait(false);
+        /// <inheritdoc/>
+        /// <exception cref="InvalidOperationException">Cannot create a thread within a voice channel.</exception>
+        public override Task<RestThreadChannel> CreateThreadAsync(string name, ThreadType type = ThreadType.PublicThread, ThreadArchiveDuration autoArchiveDuration = ThreadArchiveDuration.OneDay, IMessage message = null, bool? invitable = null, int? slowmode = null, RequestOptions options = null)
+            => throw new InvalidOperationException("Cannot create a thread within a voice channel");
+
+        #endregion
 
         private string DebuggerDisplay => $"{Name} ({Id}, Voice)";
+
+        #region TextOverrides
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestMessage> GetMessageAsync(ulong id, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetMessageAsync(id, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task DeleteMessageAsync(IMessage message, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.DeleteMessageAsync(message, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.DeleteMessageAsync(messageId, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task DeleteMessagesAsync(IEnumerable<IMessage> messages, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.DeleteMessagesAsync(messages, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task DeleteMessagesAsync(IEnumerable<ulong> messageIds, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.DeleteMessagesAsync(messageIds, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IDisposable EnterTypingState(RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.EnterTypingState(options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(IMessage fromMessage, Direction dir, int limit = 100, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetMessagesAsync(fromMessage, dir, limit, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(int limit = 100, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetMessagesAsync(limit, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IAsyncEnumerable<IReadOnlyCollection<RestMessage>> GetMessagesAsync(ulong fromMessageId, Direction dir, int limit = 100, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetMessagesAsync(fromMessageId, dir, limit, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<IReadOnlyCollection<RestMessage>> GetPinnedMessagesAsync(RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetPinnedMessagesAsync(options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestWebhook> GetWebhookAsync(ulong id, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetWebhookAsync(id, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<IReadOnlyCollection<RestWebhook>> GetWebhooksAsync(RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetWebhooksAsync(options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestWebhook> CreateWebhookAsync(string name, Stream avatar = null, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.CreateWebhookAsync(name, avatar, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<IUserMessage> ModifyMessageAsync(ulong messageId, Action<MessageProperties> func, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.ModifyMessageAsync(messageId, func, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendFileAsync(FileAttachment attachment, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendFileAsync(attachment, text, isTTS, embed, options, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendFileAsync(stream, filename, text, isTTS, embed, options, isSpoiler, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendFileAsync(filePath, text, isTTS, embed, options, isSpoiler, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendFilesAsync(IEnumerable<FileAttachment> attachments, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendFilesAsync(attachments, text, isTTS, embed, options, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendMessageAsync(string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendMessageAsync(text, isTTS, embed, options, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task TriggerTypingAsync(RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.TriggerTypingAsync(options);
+        }
+
         #endregion
 
+
         #region IAudioChannel
         /// <inheritdoc />
         /// <exception cref="NotSupportedException">Connecting to a REST-based channel is not supported.</exception>

src/Discord.Net.WebSocket/Entities/Channels/SocketGuildChannel.cs

@@ -222,6 +222,8 @@ namespace Discord.WebSocket
 
         #region IChannel
         /// <inheritdoc />
+        string IChannel.Name => Name;
+        /// <inheritdoc />
         IAsyncEnumerable<IReadOnlyCollection<IUser>> IChannel.GetUsersAsync(CacheMode mode, RequestOptions options)
             => ImmutableArray.Create<IReadOnlyCollection<IUser>>(Users).ToAsyncEnumerable(); //Overridden in Text/Voice
         /// <inheritdoc />

src/Discord.Net.WebSocket/Entities/Channels/SocketStageChannel.cs

@@ -15,7 +15,11 @@ namespace Discord.WebSocket
     public class SocketStageChannel : SocketVoiceChannel, IStageChannel
     {
         /// <inheritdoc/>
-        public string Topic { get; private set; }
+        /// <remarks>
+        ///     This field is always false for stage channels.
+        /// </remarks>
+        public override bool IsTextInVoice
+            => false;
 
         /// <inheritdoc/>
         public StagePrivacyLevel? PrivacyLevel { get; private set; }
@@ -49,19 +53,16 @@ namespace Discord.WebSocket
             entity.Update(state, model);
             return entity;
         }
-
         internal void Update(StageInstance model, bool isLive = false)
         {
             IsLive = isLive;
             if (isLive)
             {
-                Topic = model.Topic;
                 PrivacyLevel = model.PrivacyLevel;
                 IsDiscoverableDisabled = model.DiscoverableDisabled;
             }
             else
             {
-                Topic = null;
                 PrivacyLevel = null;
                 IsDiscoverableDisabled = null;
             }

src/Discord.Net.WebSocket/Entities/Channels/SocketTextChannel.cs

@@ -128,7 +128,7 @@ namespace Discord.WebSocket
 
         #region Messages
         /// <inheritdoc />
-        public SocketMessage GetCachedMessage(ulong id)
+        public virtual SocketMessage GetCachedMessage(ulong id)
             => _messages?.Get(id);
         /// <summary>
         ///     Gets a message from this message channel.
@@ -143,7 +143,7 @@ namespace Discord.WebSocket
         ///     A task that represents an asynchronous get operation for retrieving the message. The task result contains
         ///     the retrieved message; <c>null</c> if no message is found with the specified identifier.
         /// </returns>
-        public async Task<IMessage> GetMessageAsync(ulong id, RequestOptions options = null)
+        public virtual async Task<IMessage> GetMessageAsync(ulong id, RequestOptions options = null)
         {
             IMessage msg = _messages?.Get(id);
             if (msg == null)
@@ -163,7 +163,7 @@ namespace Discord.WebSocket
         /// <returns>
         ///     Paged collection of messages.
         /// </returns>
-        public IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
+        public virtual IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
             => SocketChannelHelper.GetMessagesAsync(this, Discord, _messages, null, Direction.Before, limit, CacheMode.AllowDownload, options);
         /// <summary>
         ///     Gets a collection of messages in this channel.
@@ -179,7 +179,7 @@ namespace Discord.WebSocket
         /// <returns>
         ///     Paged collection of messages.
         /// </returns>
-        public IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(ulong fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
+        public virtual IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(ulong fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
             => SocketChannelHelper.GetMessagesAsync(this, Discord, _messages, fromMessageId, dir, limit, CacheMode.AllowDownload, options);
         /// <summary>
         ///     Gets a collection of messages in this channel.
@@ -195,25 +195,25 @@ namespace Discord.WebSocket
         /// <returns>
         ///     Paged collection of messages.
         /// </returns>
-        public IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(IMessage fromMessage, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
+        public virtual IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(IMessage fromMessage, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch, RequestOptions options = null)
             => SocketChannelHelper.GetMessagesAsync(this, Discord, _messages, fromMessage.Id, dir, limit, CacheMode.AllowDownload, options);
         /// <inheritdoc />
-        public IReadOnlyCollection<SocketMessage> GetCachedMessages(int limit = DiscordConfig.MaxMessagesPerBatch)
+        public virtual IReadOnlyCollection<SocketMessage> GetCachedMessages(int limit = DiscordConfig.MaxMessagesPerBatch)
             => SocketChannelHelper.GetCachedMessages(this, Discord, _messages, null, Direction.Before, limit);
         /// <inheritdoc />
-        public IReadOnlyCollection<SocketMessage> GetCachedMessages(ulong fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
+        public virtual IReadOnlyCollection<SocketMessage> GetCachedMessages(ulong fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
             => SocketChannelHelper.GetCachedMessages(this, Discord, _messages, fromMessageId, dir, limit);
         /// <inheritdoc />
-        public IReadOnlyCollection<SocketMessage> GetCachedMessages(IMessage fromMessage, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
+        public virtual IReadOnlyCollection<SocketMessage> GetCachedMessages(IMessage fromMessage, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
             => SocketChannelHelper.GetCachedMessages(this, Discord, _messages, fromMessage.Id, dir, limit);
         /// <inheritdoc />
-        public Task<IReadOnlyCollection<RestMessage>> GetPinnedMessagesAsync(RequestOptions options = null)
+        public virtual Task<IReadOnlyCollection<RestMessage>> GetPinnedMessagesAsync(RequestOptions options = null)
             => ChannelHelper.GetPinnedMessagesAsync(this, Discord, options);
 
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendMessageAsync(string text = null, bool isTTS = false, Embed embed = null,
+        public virtual Task<RestUserMessage> SendMessageAsync(string text = null, bool isTTS = false, Embed embed = null,
             RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null,
             MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
             => ChannelHelper.SendMessageAsync(this, Discord, text, isTTS, embed, allowedMentions, messageReference,
@@ -221,7 +221,7 @@ namespace Discord.WebSocket
 
         /// <inheritdoc />
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null,
+        public virtual Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null,
             RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null,
             MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null,
             Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
@@ -230,7 +230,7 @@ namespace Discord.WebSocket
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false,
+        public virtual Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false,
             Embed embed = null, RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null,
             MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null,
             Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
@@ -239,7 +239,7 @@ namespace Discord.WebSocket
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendFileAsync(FileAttachment attachment, string text, bool isTTS = false,
+        public virtual Task<RestUserMessage> SendFileAsync(FileAttachment attachment, string text, bool isTTS = false,
             Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
             MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null,
             Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
@@ -248,7 +248,7 @@ namespace Discord.WebSocket
         /// <inheritdoc />
         /// <exception cref="ArgumentOutOfRangeException">Message content is too long, length must be less or equal to <see cref="DiscordConfig.MaxMessageSize"/>.</exception>
         /// <exception cref="ArgumentException">The only valid <see cref="MessageFlags"/> are <see cref="MessageFlags.SuppressEmbeds"/> and <see cref="MessageFlags.None"/>.</exception>
-        public Task<RestUserMessage> SendFilesAsync(IEnumerable<FileAttachment> attachments, string text, bool isTTS = false,
+        public virtual Task<RestUserMessage> SendFilesAsync(IEnumerable<FileAttachment> attachments, string text, bool isTTS = false,
             Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null,
             MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null,
             Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
@@ -256,28 +256,28 @@ namespace Discord.WebSocket
                 messageReference, components, stickers, options, embeds, flags);
 
         /// <inheritdoc />
-        public Task DeleteMessagesAsync(IEnumerable<IMessage> messages, RequestOptions options = null)
+        public virtual Task DeleteMessagesAsync(IEnumerable<IMessage> messages, RequestOptions options = null)
             => ChannelHelper.DeleteMessagesAsync(this, Discord, messages.Select(x => x.Id), options);
         /// <inheritdoc />
-        public Task DeleteMessagesAsync(IEnumerable<ulong> messageIds, RequestOptions options = null)
+        public virtual Task DeleteMessagesAsync(IEnumerable<ulong> messageIds, RequestOptions options = null)
             => ChannelHelper.DeleteMessagesAsync(this, Discord, messageIds, options);
 
         /// <inheritdoc />
-        public async Task<IUserMessage> ModifyMessageAsync(ulong messageId, Action<MessageProperties> func, RequestOptions options = null)
+        public virtual async Task<IUserMessage> ModifyMessageAsync(ulong messageId, Action<MessageProperties> func, RequestOptions options = null)
             => await ChannelHelper.ModifyMessageAsync(this, messageId, func, Discord, options).ConfigureAwait(false);
 
         /// <inheritdoc />
-        public Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
+        public virtual Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
             => ChannelHelper.DeleteMessageAsync(this, messageId, Discord, options);
         /// <inheritdoc />
-        public Task DeleteMessageAsync(IMessage message, RequestOptions options = null)
+        public virtual Task DeleteMessageAsync(IMessage message, RequestOptions options = null)
             => ChannelHelper.DeleteMessageAsync(this, message.Id, Discord, options);
 
         /// <inheritdoc />
-        public Task TriggerTypingAsync(RequestOptions options = null)
+        public virtual Task TriggerTypingAsync(RequestOptions options = null)
             => ChannelHelper.TriggerTypingAsync(this, Discord, options);
         /// <inheritdoc />
-        public IDisposable EnterTypingState(RequestOptions options = null)
+        public virtual IDisposable EnterTypingState(RequestOptions options = null)
             => ChannelHelper.EnterTypingState(this, Discord, options);
 
         internal void AddMessage(SocketMessage msg)

src/Discord.Net.WebSocket/Entities/Channels/SocketVoiceChannel.cs

@@ -4,6 +4,7 @@ using System;
 using System.Collections.Generic;
 using System.Collections.Immutable;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using Model = Discord.API.Channel;
@@ -14,33 +15,21 @@ namespace Discord.WebSocket
     ///     Represents a WebSocket-based voice channel in a guild.
     /// </summary>
     [DebuggerDisplay(@"{DebuggerDisplay,nq}")]
-    public class SocketVoiceChannel : SocketGuildChannel, IVoiceChannel, ISocketAudioChannel
+    public class SocketVoiceChannel : SocketTextChannel, IVoiceChannel, ISocketAudioChannel
     {
         #region SocketVoiceChannel
-        /// <inheritdoc />
-        public int Bitrate { get; private set; }
-        /// <inheritdoc />
-        public int? UserLimit { get; private set; }
-        /// <inheritdoc/>
-        public string RTCRegion { get; private set; }
-
-        /// <inheritdoc />
-        public ulong? CategoryId { get; private set; }
         /// <summary>
-        ///     Gets the parent (category) channel of this channel.
+        ///     Gets whether or not the guild has Text-In-Voice enabled and the voice channel is a TiV channel.
         /// </summary>
-        /// <returns>
-        ///     A category channel representing the parent of this channel; <c>null</c> if none is set.
-        /// </returns>
-        public ICategoryChannel Category
-            => CategoryId.HasValue ? Guild.GetChannel(CategoryId.Value) as ICategoryChannel : null;
+        public virtual bool IsTextInVoice
+            => Guild.Features.HasTextInVoice;
 
         /// <inheritdoc />
-        public string Mention => MentionUtils.MentionChannel(Id);
-
+        public int Bitrate { get; private set; }
+        /// <inheritdoc />
+        public int? UserLimit { get; private set; }
         /// <inheritdoc />
-        public Task SyncPermissionsAsync(RequestOptions options = null)
-            => ChannelHelper.SyncPermissionsAsync(this, Discord, options);
+        public string RTCRegion { get; private set; }
 
         /// <summary>
         ///     Gets a collection of users that are currently connected to this voice channel.
@@ -48,7 +37,7 @@ namespace Discord.WebSocket
         /// <returns>
         ///     A read-only collection of users that are currently connected to this voice channel.
         /// </returns>
-        public override IReadOnlyCollection<SocketGuildUser> Users
+        public IReadOnlyCollection<SocketGuildUser> ConnectedUsers
             => Guild.Users.Where(x => x.VoiceChannel?.Id == Id).ToImmutableArray();
 
         internal SocketVoiceChannel(DiscordSocketClient discord, ulong id, SocketGuild guild)
@@ -65,7 +54,6 @@ namespace Discord.WebSocket
         internal override void Update(ClientState state, Model model)
         {
             base.Update(state, model);
-            CategoryId = model.CategoryId;
             Bitrate = model.Bitrate.Value;
             UserLimit = model.UserLimit.Value != 0 ? model.UserLimit.Value : (int?)null;
             RTCRegion = model.RTCRegion.GetValueOrDefault(null);
@@ -99,28 +87,215 @@ namespace Discord.WebSocket
                 return user;
             return null;
         }
-#endregion
 
-        #region Invites
-        /// <inheritdoc />
-        public async Task<IInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, options).ConfigureAwait(false);
-        /// <inheritdoc />
-        public async Task<IInviteMetadata> CreateInviteToApplicationAsync(ulong applicationId, int? maxAge, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteToApplicationAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, applicationId, options).ConfigureAwait(false);
-        /// <inheritdoc />
-        public virtual async Task<IInviteMetadata> CreateInviteToApplicationAsync(DefaultApplications application, int? maxAge = 86400, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteToApplicationAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, (ulong)application, options);
-        /// <inheritdoc />
-        public async Task<IInviteMetadata> CreateInviteToStreamAsync(IUser user, int? maxAge, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => await ChannelHelper.CreateInviteToStreamAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, user, options).ConfigureAwait(false);
-        /// <inheritdoc />
-        public async Task<IReadOnlyCollection<IInviteMetadata>> GetInvitesAsync(RequestOptions options = null)
-            => await ChannelHelper.GetInvitesAsync(this, Discord, options).ConfigureAwait(false);
+        /// <inheritdoc/> <exception cref="InvalidOperationException">Cannot create threads in voice channels.</exception>
+        public override Task<SocketThreadChannel> CreateThreadAsync(string name, ThreadType type = ThreadType.PublicThread, ThreadArchiveDuration autoArchiveDuration = ThreadArchiveDuration.OneDay, IMessage message = null, bool? invitable = null, int? slowmode = null, RequestOptions options = null)
+            => throw new InvalidOperationException("Voice channels cannot contain threads.");
+
+        /// <inheritdoc/> <exception cref="InvalidOperationException">Cannot modify text channel properties for voice channels.</exception>
+        public override Task ModifyAsync(Action<TextChannelProperties> func, RequestOptions options = null)
+            => throw new InvalidOperationException("Cannot modify text channel properties for voice channels.");
+
+        #endregion
+
+        #region TextOverrides
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<IMessage> GetMessageAsync(ulong id, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetMessageAsync(id, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task DeleteMessageAsync(IMessage message, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.DeleteMessageAsync(message, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task DeleteMessageAsync(ulong messageId, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.DeleteMessageAsync(messageId, options); 
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task DeleteMessagesAsync(IEnumerable<IMessage> messages, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.DeleteMessagesAsync(messages, options); 
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task DeleteMessagesAsync(IEnumerable<ulong> messageIds, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.DeleteMessagesAsync(messageIds, options); 
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IDisposable EnterTypingState(RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.EnterTypingState(options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override SocketMessage GetCachedMessage(ulong id)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetCachedMessage(id); 
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IReadOnlyCollection<SocketMessage> GetCachedMessages(IMessage fromMessage, Direction dir, int limit = 100)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetCachedMessages(fromMessage, dir, limit);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IReadOnlyCollection<SocketMessage> GetCachedMessages(int limit = 100)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetCachedMessages(limit);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IReadOnlyCollection<SocketMessage> GetCachedMessages(ulong fromMessageId, Direction dir, int limit = 100)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetCachedMessages(fromMessageId, dir, limit);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(IMessage fromMessage, Direction dir, int limit = 100, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetMessagesAsync(fromMessage, dir, limit, options); 
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(int limit = 100, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetMessagesAsync(limit, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(ulong fromMessageId, Direction dir, int limit = 100, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetMessagesAsync(fromMessageId, dir, limit, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<IReadOnlyCollection<RestMessage>> GetPinnedMessagesAsync(RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetPinnedMessagesAsync(options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestWebhook> GetWebhookAsync(ulong id, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetWebhookAsync(id, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<IReadOnlyCollection<RestWebhook>> GetWebhooksAsync(RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.GetWebhooksAsync(options); 
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestWebhook> CreateWebhookAsync(string name, Stream avatar = null, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.CreateWebhookAsync(name, avatar, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<IUserMessage> ModifyMessageAsync(ulong messageId, Action<MessageProperties> func, RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.ModifyMessageAsync(messageId, func, options);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendFileAsync(FileAttachment attachment, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendFileAsync(attachment, text, isTTS, embed, options, allowedMentions, messageReference, components, stickers, embeds, flags); 
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendFileAsync(Stream stream, string filename, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendFileAsync(stream, filename, text, isTTS, embed, options, isSpoiler, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendFileAsync(string filePath, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendFileAsync(filePath, text, isTTS, embed, options, isSpoiler, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendFilesAsync(IEnumerable<FileAttachment> attachments, string text, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendFilesAsync(attachments, text, isTTS, embed, options, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task<RestUserMessage> SendMessageAsync(string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.SendMessageAsync(text, isTTS, embed, options, allowedMentions, messageReference, components, stickers, embeds, flags);
+        }
+
+        /// <inheritdoc/> <exception cref="NotSupportedException">This function is only supported in Text-In-Voice channels.</exception>
+        public override Task TriggerTypingAsync(RequestOptions options = null)
+        {
+            if (!IsTextInVoice)
+                throw new NotSupportedException("This function is only supported in Text-In-Voice channels");
+            return base.TriggerTypingAsync(options);
+        }
+
+        #endregion
 
         private string DebuggerDisplay => $"{Name} ({Id}, Voice)";
         internal new SocketVoiceChannel Clone() => MemberwiseClone() as SocketVoiceChannel;
-        #endregion
 
         #region IGuildChannel
         /// <inheritdoc />

test/Discord.Net.Tests.Unit/MockedEntities/MockedVoiceChannel.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Text;
 using System.Threading.Tasks;
 using Discord.Audio;
@@ -12,8 +13,6 @@ namespace Discord
 
         public int? UserLimit => throw new NotImplementedException();
 
-        public string Mention => throw new NotImplementedException();
-
         public ulong? CategoryId => throw new NotImplementedException();
 
         public int Position => throw new NotImplementedException();
@@ -24,116 +23,53 @@ namespace Discord
 
         public IReadOnlyCollection<Overwrite> PermissionOverwrites => throw new NotImplementedException();
 
+        public string RTCRegion => throw new NotImplementedException();
+
         public string Name => throw new NotImplementedException();
 
         public DateTimeOffset CreatedAt => throw new NotImplementedException();
-        public ulong Id => throw new NotImplementedException();
-
-        public string RTCRegion => throw new NotImplementedException();
 
-        public Task AddPermissionOverwriteAsync(IRole role, OverwritePermissions permissions, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task AddPermissionOverwriteAsync(IUser user, OverwritePermissions permissions, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
+        public ulong Id => throw new NotImplementedException();
 
-        public Task<IAudioClient> ConnectAsync(bool selfDeaf = false, bool selfMute = false, bool external = false)
-        {
-            throw new NotImplementedException();
-        }
+        public string Mention => throw new NotImplementedException();
 
-        public Task<IInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-        public Task<IInviteMetadata> CreateInviteToApplicationAsync(ulong applicationId, int? maxAge, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => throw new NotImplementedException();
+        public Task AddPermissionOverwriteAsync(IRole role, OverwritePermissions permissions, RequestOptions options = null) => throw new NotImplementedException();
+        public Task AddPermissionOverwriteAsync(IUser user, OverwritePermissions permissions, RequestOptions options = null) => throw new NotImplementedException();
+        public Task<IAudioClient> ConnectAsync(bool selfDeaf = false, bool selfMute = false, bool external = false) => throw new NotImplementedException();
+        public Task<IInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null) => throw new NotImplementedException();
+        public Task<IInviteMetadata> CreateInviteToApplicationAsync(ulong applicationId, int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null) => throw new NotImplementedException();
         public Task<IInviteMetadata> CreateInviteToApplicationAsync(DefaultApplications application, int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null) => throw new NotImplementedException();
-        public Task<IInviteMetadata> CreateInviteToStreamAsync(IUser user, int? maxAge, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
-            => throw new NotImplementedException();
-
-        public Task DeleteAsync(RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task DisconnectAsync()
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task ModifyAsync(Action<AudioChannelProperties> func, RequestOptions options)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task<ICategoryChannel> GetCategoryAsync(CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task<IReadOnlyCollection<IInviteMetadata>> GetInvitesAsync(RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public OverwritePermissions? GetPermissionOverwrite(IRole role)
-        {
-            throw new NotImplementedException();
-        }
-
-        public OverwritePermissions? GetPermissionOverwrite(IUser user)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task<IGuildUser> GetUserAsync(ulong id, CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public IAsyncEnumerable<IReadOnlyCollection<IGuildUser>> GetUsersAsync(CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task ModifyAsync(Action<VoiceChannelProperties> func, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task ModifyAsync(Action<GuildChannelProperties> func, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task RemovePermissionOverwriteAsync(IRole role, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task RemovePermissionOverwriteAsync(IUser user, RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task SyncPermissionsAsync(RequestOptions options = null)
-        {
-            throw new NotImplementedException();
-        }
-
-        Task<IUser> IChannel.GetUserAsync(ulong id, CacheMode mode, RequestOptions options)
-        {
-            throw new NotImplementedException();
-        }
-
-        IAsyncEnumerable<IReadOnlyCollection<IUser>> IChannel.GetUsersAsync(CacheMode mode, RequestOptions options)
-        {
-            throw new NotImplementedException();
-        }
+        public Task<IInviteMetadata> CreateInviteToStreamAsync(IUser user, int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null) => throw new NotImplementedException();
+        public Task DeleteAsync(RequestOptions options = null) => throw new NotImplementedException();
+        public Task DeleteMessageAsync(ulong messageId, RequestOptions options = null) => throw new NotImplementedException();
+        public Task DeleteMessageAsync(IMessage message, RequestOptions options = null) => throw new NotImplementedException();
+        public Task DisconnectAsync() => throw new NotImplementedException();
+        public IDisposable EnterTypingState(RequestOptions options = null) => throw new NotImplementedException();
+        public Task<ICategoryChannel> GetCategoryAsync(CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null) => throw new NotImplementedException();
+        public Task<IReadOnlyCollection<IInviteMetadata>> GetInvitesAsync(RequestOptions options = null) => throw new NotImplementedException();
+        public Task<IMessage> GetMessageAsync(ulong id, CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null) => throw new NotImplementedException();
+        public IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(int limit = 100, CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null) => throw new NotImplementedException();
+        public IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(ulong fromMessageId, Direction dir, int limit = 100, CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null) => throw new NotImplementedException();
+        public IAsyncEnumerable<IReadOnlyCollection<IMessage>> GetMessagesAsync(IMessage fromMessage, Direction dir, int limit = 100, CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null) => throw new NotImplementedException();
+        public OverwritePermissions? GetPermissionOverwrite(IRole role) => throw new NotImplementedException();
+        public OverwritePermissions? GetPermissionOverwrite(IUser user) => throw new NotImplementedException();
+        public Task<IReadOnlyCollection<IMessage>> GetPinnedMessagesAsync(RequestOptions options = null) => throw new NotImplementedException();
+        public Task<IGuildUser> GetUserAsync(ulong id, CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null) => throw new NotImplementedException();
+        public IAsyncEnumerable<IReadOnlyCollection<IGuildUser>> GetUsersAsync(CacheMode mode = CacheMode.AllowDownload, RequestOptions options = null) => throw new NotImplementedException();
+        public Task ModifyAsync(Action<VoiceChannelProperties> func, RequestOptions options = null) => throw new NotImplementedException();
+        public Task ModifyAsync(Action<GuildChannelProperties> func, RequestOptions options = null) => throw new NotImplementedException();
+        public Task ModifyAsync(Action<AudioChannelProperties> func, RequestOptions options = null) => throw new NotImplementedException();
+        public Task<IUserMessage> ModifyMessageAsync(ulong messageId, Action<MessageProperties> func, RequestOptions options = null) => throw new NotImplementedException();
+        public Task RemovePermissionOverwriteAsync(IRole role, RequestOptions options = null) => throw new NotImplementedException();
+        public Task RemovePermissionOverwriteAsync(IUser user, RequestOptions options = null) => throw new NotImplementedException();
+        public Task<IUserMessage> SendFileAsync(string filePath, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None) => throw new NotImplementedException();
+        public Task<IUserMessage> SendFileAsync(Stream stream, string filename, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, bool isSpoiler = false, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None) => throw new NotImplementedException();
+        public Task<IUserMessage> SendFileAsync(FileAttachment attachment, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None) => throw new NotImplementedException();
+        public Task<IUserMessage> SendFilesAsync(IEnumerable<FileAttachment> attachments, string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None) => throw new NotImplementedException();
+        public Task<IUserMessage> SendMessageAsync(string text = null, bool isTTS = false, Embed embed = null, RequestOptions options = null, AllowedMentions allowedMentions = null, MessageReference messageReference = null, MessageComponent components = null, ISticker[] stickers = null, Embed[] embeds = null, MessageFlags flags = MessageFlags.None) => throw new NotImplementedException();
+        public Task SyncPermissionsAsync(RequestOptions options = null) => throw new NotImplementedException();
+        public Task TriggerTypingAsync(RequestOptions options = null) => throw new NotImplementedException();
+        Task<IUser> IChannel.GetUserAsync(ulong id, CacheMode mode, RequestOptions options) => throw new NotImplementedException();
+        IAsyncEnumerable<IReadOnlyCollection<IUser>> IChannel.GetUsersAsync(CacheMode mode, RequestOptions options) => throw new NotImplementedException();
     }
 }