code: def test_unparse(self):
      node = gast.If(
          test=gast.Constant(1, kind=None),
          body=[
              gast_util.compat_assign(
                  targets=[
                      gast.Name(
                          "a",
                          ctx=gast.Store(),
                          annotation=None,
                          type_comment=None,
                      )
                  ],
                  value=gast.Name(
                      "b",
                      ctx=gast.Load(),
                      annotation=None,
                      type_comment=None,
                  ),
                  type_comment=None,
              )
          ],
          orelse=[
              gast_util.compat_assign(
                  targets=[
                      gast.Name(
                          "a",
                          ctx=gast.Store(),
                          annotation=None,
                          type_comment=None,
                      )
                  ],
                  value=gast.Constant("c", kind=None),
                  type_comment=None,
              )
          ],
      )
  
      source = parser.unparse(node, indentation="  ")
      self.assertEqual(
          textwrap.dedent(
              """
              # coding=utf-8
              if 1:
                  a = b
              else:
                  a = 'c'
          """
          ).strip(),
          source.strip(),
      )
  
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 24 for calling the ParserTest obj's underlying member method code with example usage: obj.test_unparse() without return types