Add `Flags` property to channels

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

@@ -21,6 +21,17 @@ namespace Discord
         /// </returns>
         int Position { get; }
 
+        /// <summary>
+        ///     Gets the flags related to this channel.
+        /// </summary>
+        /// <remarks>
+        ///     This value is determined by bitwise OR-ing <see cref="ChannelFlags"/> values together.
+        /// </remarks>
+        /// <returns>
+        ///     A channel's flags, if any is associated.
+        /// </returns>
+        ChannelFlags Flags { get; }
+
         /// <summary>
         ///     Gets the guild associated with this channel.
         /// </summary>

src/Discord.Net.Rest/API/Common/Channel.cs

@@ -79,5 +79,8 @@ namespace Discord.API
 
         [JsonProperty("default_thread_rate_limit_per_user")]
         public Optional<int> ThreadRateLimitPerUser { get; set; }
+
+        [JsonProperty("flags")]
+        public Optional<ChannelFlags> Flags { get; set; }
     }
 }

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

@@ -26,6 +26,9 @@ namespace Discord.Rest
         /// <inheritdoc />
         public ulong GuildId => Guild.Id;
 
+        /// <inheritdoc />
+        public ChannelFlags Flags { get; private set; }
+
         internal RestGuildChannel(BaseDiscordClient discord, IGuild guild, ulong id)
             : base(discord, id)
         {
@@ -62,6 +65,8 @@ namespace Discord.Rest
                     newOverwrites.Add(overwrites[i].ToEntity());
                 _overwrites = newOverwrites.ToImmutable();
             }
+
+            Flags = model.Flags.GetValueOrDefault(ChannelFlags.None);
         }
 
         /// <inheritdoc />

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

@@ -30,6 +30,9 @@ namespace Discord.WebSocket
         /// <inheritdoc />
         public int Position { get; private set; }
 
+        /// <inheritdoc />
+        public ChannelFlags Flags { get; private set; }
+
         /// <inheritdoc />
         public virtual IReadOnlyCollection<Overwrite> PermissionOverwrites => _overwrites;
         /// <summary>
@@ -74,6 +77,8 @@ namespace Discord.WebSocket
             for (int i = 0; i < overwrites.Length; i++)
                 newOverwrites.Add(overwrites[i].ToEntity());
             _overwrites = newOverwrites.ToImmutable();
+
+            Flags = model.Flags.GetValueOrDefault(ChannelFlags.None);
         }
 
         /// <inheritdoc />

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

@@ -20,6 +20,8 @@ namespace Discord
         public DateTimeOffset CreatedAt => throw new NotImplementedException();
 
         public ulong Id => throw new NotImplementedException();
+        
+        public ChannelFlags Flags => throw new NotImplementedException();
 
         public Task AddPermissionOverwriteAsync(IRole role, OverwritePermissions permissions, RequestOptions options = null)
         {

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

@@ -34,6 +34,8 @@ namespace Discord
 
         public ulong Id => throw new NotImplementedException();
 
+        public ChannelFlags Flags => throw new NotImplementedException();
+
         public Task AddPermissionOverwriteAsync(IRole role, OverwritePermissions permissions, RequestOptions options = null)
         {
             throw new NotImplementedException();

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

@@ -36,6 +36,8 @@ namespace Discord
 
         public string Mention => throw new NotImplementedException();
 
+        public ChannelFlags Flags => 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();