class_docstr: Holds leaves and comments. Can be printed with `str(line)`.
class_docstr_tok: ["Holds","leaves","and","comments",".","Can","be","printed","with","`","str","(","line",")","`","."]
code: def contains_multiline_strings(self) -> bool:
      return any(is_multiline_string(leaf) for leaf in self.leaves)
  
imports: import itertools
  import math
  from dataclasses import dataclass, field
  from typing import Callable, Dict, Iterator, List, Optional, Sequence, Tuple, TypeVar, Union, cast
  from black.brackets import COMMA_PRIORITY, DOT_PRIORITY, BracketTracker
  from black.mode import Mode, Preview
  from black.nodes import BRACKETS, CLOSING_BRACKETS, OPENING_BRACKETS, STANDALONE_COMMENT, TEST_DESCENDANTS, child_towards, is_docstring, is_import, is_multiline_string, is_one_sequence_between, is_type_comment, is_type_ignore_comment, is_with_or_async_with_stmt, make_simple_prefix, replace_child, syms, whitespace
  from black.strings import str_width
  from blib2to3.pgen2 import token
  from blib2to3.pytree import Leaf, Node
label_desc: Use image node_id 21 for calling the Line obj's underlying member method code with example usage: obj.contains_multiline_strings() and returns: any