diff --git a/swift/Sources/FlatBuffers/FlatBuffersUtils.swift b/swift/Sources/FlatBuffers/FlatBuffersUtils.swift
index 507ef67..dc5f785 100644
--- a/swift/Sources/FlatBuffers/FlatBuffersUtils.swift
+++ b/swift/Sources/FlatBuffers/FlatBuffersUtils.swift
@@ -1,5 +1,5 @@
 /*
- * Copyright 2020 Google Inc. All rights reserved.
+ * Copyright 2021 Google Inc. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,7 +16,8 @@
 
 import Foundation
 
-public final class FlatBuffersUtils {
+/// FlatBuffersUtils hosts some utility functions that might be useful
+public enum FlatBuffersUtils {
 
   /// Gets the size of the prefix
   /// - Parameter bb: Flatbuffer object
@@ -24,8 +25,12 @@
     bb.read(def: Int32.self, position: bb.reader)
   }
 
-  /// Removes the prefix by duplicating the Flatbuffer
+  /// Removes the prefix by duplicating the Flatbuffer this call is expensive since its
+  /// creates a new buffer use `readPrefixedSizeCheckedRoot` instead
+  /// unless a completely new buffer is required
   /// - Parameter bb: Flatbuffer object
+  ///
+  ///
   public static func removeSizePrefix(bb: ByteBuffer) -> ByteBuffer {
     bb.duplicate(removing: MemoryLayout<Int32>.size)
   }