Get information about original function from bound function

include/v8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2647 matching lines @@
   /**
    * Returns scriptId object.
    */
   V8_DEPRECATED("Use ScriptId instead", Handle<Value> GetScriptId() const);
 
   /**
    * Returns scriptId.
    */
   int ScriptId() const;
 
+  /**
+   * Returns the original function if this function is bound, else returns
+   * v8::Undefined.
+   */
+  Local<Value> GetBoundFunction() const;
+
   ScriptOrigin GetScriptOrigin() const;
   V8_INLINE static Function* Cast(Value* obj);
   static const int kLineOffsetNotFound;
 
  private:
   Function();
   static void CheckCast(Value* obj);
 };
 
 #ifndef V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT
@@ skipping 4065 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_