docstr: Add new entry to our chain-map.
  
  Values are type-checked.
code: def _push(self, **kwargs):
      """
      Add new entry to our chain-map.
  
      Values are type-checked.
      """
      el = self._chain.push({})
      # Since we want to type-check, we add the entries manually.
      for key, value in kwargs.items():
          self._set(key, value)
  
      return el
  
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 13 for calling the Settings obj's underlying member method code with example usage: obj._push() and returns: el