code: def test_form_feed():
      indent, error_token, dedent_, endmarker = _get_token_list(
          dedent(
              '''\
          \f"""'''
          )
      )
      assert error_token.prefix == "\f"
      assert error_token.string == '"""'
      assert endmarker.prefix == ""
      assert indent.type == INDENT
      assert dedent_.type == DEDENT
  
imports: import sys
  from textwrap import dedent
  import pytest
  from parso.utils import split_lines, parse_version_string
  from parso.python.token import PythonTokenTypes
  from parso.python import tokenize
  from parso import parse
  from parso.python.tokenize import PythonToken
label_desc: Use image node_id 20 for calling a global function with example usage: test_form_feed() without return types