class_docstr: Return a callable object that calls the given method on its operand.
  
  Unlike the builtin `operator.methodcaller`, instances of this class are
  serializable
code: def __reduce__(self):
      return (methodcaller, (self.method,))
  
label_desc: Use image node_id 3 for calling the methodcaller obj's underlying member method code with example usage: obj.__reduce__() and returns: methodcaller,  self