code: def testDefaultParseValueStrings(self):
      self.assertEqual(parser.DefaultParseValue("hello"), "hello")
      self.assertEqual(
          parser.DefaultParseValue("path/file.jpg"), "path/file.jpg"
      )
      self.assertEqual(
          parser.DefaultParseValue("hello world"), "hello world"
      )
      self.assertEqual(parser.DefaultParseValue("--flag"), "--flag")
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from fire import parser
  from fire import testutils
label_desc: Use image node_id 3 for calling the ParserTest obj's underlying member method code with example usage: obj.testDefaultParseValueStrings() without return types