code: def test_short_name(self):
      flag = flag_def.SingleValueFlagDef(
          name="value", short_name="v", parse_type=str, required=True
      )
  
      results = _new_parser(flag).parse_args(["--value=forty-one"])
      self.assertEqual("forty-one", results.value)
      results = _new_parser(flag).parse_args(["-v", "forty-two"])
      self.assertEqual("forty-two", results.value)
  
imports: from __future__ import annotations
  import argparse
  import enum
  import math
  from absl.testing import absltest
  from google.generativeai.notebook import argument_parser
  from google.generativeai.notebook import flag_def
label_desc: Use image node_id 1 for calling the SingleValueFlagDefTest obj's underlying member method code with example usage: obj.test_short_name() without return types