code: def test_gather_action_ast(self) -> None:
      grammar_source = """
          start[mod_ty]: a[asdl_stmt_seq*]=';'.pass_stmt+ NEWLINE ENDMARKER { _PyAST_Module(a, NULL, p->arena) }
          pass_stmt[stmt_ty]: a='pass' { _PyAST_Pass(EXTRA)}
          """
      test_source = """
          stmt = "pass; pass"
          self.verify_ast_generation(stmt)
          """
      self.run_test(grammar_source, test_source)
  
imports: import contextlib
  import subprocess
  import sysconfig
  import textwrap
  import unittest
  import os
  import shutil
  import tempfile
  from pathlib import Path
  from test import test_tools
  from test import support
  from test.support import os_helper, import_helper
  from test.support.script_helper import assert_python_ok
label_desc: Use image node_id 16 for calling the TestCParser obj's underlying member method code with example usage: obj.test_gather_action_ast() without return types