code: def test_empty_dict_named_config(ex):
      @ex.named_config
      def ncfg():
          empty_dict = {}
          nested_empty_dict = {"k1": {"k2": {}}}
  
      @ex.automain
      def main(empty_dict=1, nested_empty_dict=2):
          return empty_dict, nested_empty_dict
  
      assert ex.run().result == (1, 2)
      assert ex.run(named_configs=["ncfg"]).result == (
          {},
          {"k1": {"k2": {}}},
      )
  
imports: from sacred import Ingredient
  from mock import patch
  import pytest
  import sys
  from sacred import cli_option
  from sacred import host_info_gatherer
  from sacred.experiment import Experiment
  from sacred.utils import apply_backspaces_and_linefeeds, ConfigAddedError, SacredError
label_desc: Use image node_id 11 for calling a global function with example usage: test_empty_dict_named_config(ex) and returns: empty_dict,  nested_empty_dict