Made API models internal. Removed Discord.Net.API.

src/Discord.Net.Rest/API/Rest/ModifyGuildIntegrationParams.cs

@@ -0,0 +1,16 @@
+#pragma warning disable CS1591
+using Newtonsoft.Json;
+
+namespace Discord.API.Rest
+{
+    [JsonObject(MemberSerialization = MemberSerialization.OptIn)]
+    internal class ModifyGuildIntegrationParams
+    {
+        [JsonProperty("expire_behavior")]
+        public Optional<int> ExpireBehavior { get; set; }
+        [JsonProperty("expire_grace_period")]
+        public Optional<int> ExpireGracePeriod { get; set; }
+        [JsonProperty("enable_emoticons")]
+        public Optional<bool> EnableEmoticons { get; set; }
+    }
+}