code: def testDefaultParseValueNone(self):
      self.assertEqual(parser.DefaultParseValue("None"), None)
  
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 13 for calling the ParserTest obj's underlying member method code with example usage: obj.testDefaultParseValueNone() without return types