class_docstr: A singleton representing one or more lines of source code that were skipped
  in FrameInfo.lines.
  
  LINE_GAP can be created in two ways:
  - by truncating a piece of context that's too long.
  - immediately after the signature piece if Options.include_signature is true
    and the following piece isn't already part of the included pieces. 
class_docstr_tok: ["A","singleton","representing","one","or","more","lines","of","source","code","that","were","skipped","in","FrameInfo.lines",".","LINE_GAP","can","be","created","in","two","ways",":","-","by","truncating","a","piece","of","context","that","'s","too","long",".","-","immediately","after","the","signature","piece","if","Options.include_signature","is","true","and","the","following","piece","is","n't","already","part","of","the","included","pieces","."]
code: def __repr__(self):
      return "LINE_GAP"
  
imports: import ast
  import html
  import os
  import sys
  from collections import defaultdict, Counter
  from enum import Enum
  from textwrap import dedent
  from types import FrameType, CodeType, TracebackType
  from typing import Iterator, List, Tuple, Optional, NamedTuple, Any, Iterable, Callable, Union, Sequence
  from typing import Mapping
  import executing
  from asttokens.util import Token
  from executing import only
  from pure_eval import Evaluator, is_expression_interesting
  from stack_data.utils import truncate, unique_in_order, line_range, frame_and_lineno, iter_stack, collapse_repeated, group_by_key_func, cached_property, is_frame, _pygmented_with_ranges, assert_
label_desc: Use image node_id 1 for calling the LineGap obj's underlying member method code with example usage: obj.__repr__() and returns: str