docstr: Test that str() returns the source value,
  useful for serialization/deserialization and user-friendly logging
docstr_tok: ["Test","that","str","(",")","returns","the","source","value",",","useful","for","serialization\/deserialization","and","user-friendly","logging"]
code: def test_str(self):
      """
      Test that str() returns the source value,
      useful for serialization/deserialization and user-friendly logging
      """
      assert str(ASRModelType("ctc")) == "ctc"
  
imports: from nemo.utils.enum import PrettyStrEnum
label_desc: Use image node_id 3 for calling the TestPrettyStrEnum obj's underlying member method code with example usage: obj.test_str() without return types