Cleaning up some things.

BinaryFormat/Chunks/PRNT.cs

@@ -0,0 +1,35 @@
+namespace RobloxFiles.BinaryFormat.Chunks
+{
+    public class PRNT
+    {
+        public readonly byte Format;
+        public readonly int NumRelations;
+
+        public readonly int[] ChildrenIds;
+        public readonly int[] ParentIds;
+
+        public PRNT(BinaryRobloxFileChunk chunk)
+        {
+            using (BinaryRobloxFileReader reader = chunk.GetDataReader())
+            {
+                Format = reader.ReadByte();
+                NumRelations = reader.ReadInt32();
+
+                ChildrenIds = reader.ReadInstanceIds(NumRelations);
+                ParentIds = reader.ReadInstanceIds(NumRelations);
+            }
+        }
+
+        public void Assemble(BinaryRobloxFile file)
+        {
+            for (int i = 0; i < NumRelations; i++)
+            {
+                int childId = ChildrenIds[i];
+                int parentId = ParentIds[i];
+
+                Instance child = file.Instances[childId];
+                child.Parent = (parentId >= 0 ? file.Instances[parentId] : file);
+            }
+        }
+    }
+}