code: def test_dedent_block_multiline_expression(self):
      code = """
      def f():
        return (1,
  2,
          3)
      """
  
      f = self._eval_code(parser.dedent_block(code), "f")
      self.assertEqual(f(), (1, 2, 3))
  
imports: import re
  import textwrap
  import unittest
  import gast
  from nvidia.dali._autograph.pyct import ast_util
  from nvidia.dali._autograph.pyct import errors
  from nvidia.dali._autograph.pyct import gast_util
  from nvidia.dali._autograph.pyct import parser
  from nvidia.dali._autograph.pyct import pretty_printer
label_desc: Use image node_id 20 for calling the ParserTest obj's underlying member method code with example usage: obj.test_dedent_block_multiline_expression() without return types