code: def test_nested_dict_revelation():
      d1 = DogmaticDict({"a": 7, "b": 12})
      d2 = DogmaticDict({"c": 7})
      l = DogmaticList([d1, 2, d2])
      #    assert l.revelation() == {'0.a', '0.b', '2.c'}
      l.revelation()
      assert "a" in l[0]
      assert "b" in l[0]
      assert "c" in l[2]
  
imports: import pytest
  from sacred.config.custom_containers import DogmaticDict, DogmaticList
label_desc: Use image node_id 20 for calling a global function with example usage: test_nested_dict_revelation() without return types