class_docstr: Result of `Signature.bind` call.  Holds the mapping of arguments
  to the function's parameters.
  
  Has the following public attributes:
  
  * arguments : OrderedDict
      An ordered mutable mapping of parameters' names to arguments' values.
      Does not contain arguments' default values.
  * signature : Signature
      The Signature object that created this instance.
  * args : tuple
      Tuple of positional arguments values.
  * kwargs : dict
      Dict of keyword arguments values.
code: def signature(self):
      return self._signature
  
imports: from __future__ import absolute_import, division, print_function
  import itertools
  import functools
  import re
  import types
label_desc: Use image node_id 2 for calling the BoundArguments obj's underlying member method code with example usage: obj.signature() and returns: self