Cleaning up some things.

BinaryFormat/Chunks/INST.cs

@@ -0,0 +1,40 @@
+namespace RobloxFiles.BinaryFormat.Chunks
+{
+    public class INST
+    {
+        public readonly int TypeIndex;
+        public readonly string TypeName;
+        public readonly bool IsService;
+        public readonly int NumInstances;
+        public readonly int[] InstanceIds;
+
+        public override string ToString()
+        {
+            return TypeName;
+        }
+
+        public INST(BinaryRobloxFileChunk chunk)
+        {
+            using (BinaryRobloxFileReader reader = chunk.GetDataReader())
+            {
+                TypeIndex = reader.ReadInt32();
+                TypeName = reader.ReadString();
+                IsService = reader.ReadBoolean();
+
+                NumInstances = reader.ReadInt32();
+                InstanceIds = reader.ReadInstanceIds(NumInstances);
+            }
+        }
+
+        public void Allocate(BinaryRobloxFile file)
+        {
+            foreach (int instId in InstanceIds)
+            {
+                Instance inst = new Instance() { ClassName = TypeName };
+                file.Instances[instId] = inst;
+            }
+
+            file.Types[TypeIndex] = this;
+        }
+    }
+}