code: def test_get(fbdict):
      fbdict["a"] = "b"
      assert fbdict.get("a", 18) == "b"
      assert fbdict.get("fall1", 18) == 7
      assert fbdict.get("notexisting", 18) == 18
      assert fbdict.get("fall3", 18) is True
  
imports: import pytest
  from sacred.config.custom_containers import fallback_dict
label_desc: Use image node_id 5 for calling a global function with example usage: test_get(fbdict) without return types