code: def _pop(self):
      assert len(self._chain) > 2, "Can't pop initial setting."
      return self._chain.pop()
  
imports: import functools
  import inspect
  import itertools
  from operator import attrgetter
  from typing import Any
  from gluonts.pydantic import pydantic, deep_update
label_desc: Use image node_id 14 for calling the Settings obj's underlying member method code with example usage: obj._pop() and returns: self