How to use the flexmock.FullArgSpec function in flexmock

def _update_argspec(self):
    original = self.__dict__.get('original')
    if original:
      try:
        if sys.version_info < (3, 0):
          self.argspec = FullArgSpec(inspect.getargspec(original))
        else:
          self.argspec = FullArgSpec(inspect.getfullargspec(original))
      except TypeError:
        # built-in function: fall back to stupid processing and hope the
        # builtins don't change signature
        pass

def _update_argspec(self):
    original = self.__dict__.get('original')
    if original:
      try:
        if sys.version_info < (3, 0):
          self.argspec = FullArgSpec(inspect.getargspec(original))
        else:
          self.argspec = FullArgSpec(inspect.getfullargspec(original))
      except TypeError:
        # built-in function: fall back to stupid processing and hope the
        # builtins don't change signature
        pass