code: def format_blank_lines_linenumbers(self, blank_line):
      if self.current_line_indicator:
          result = " " * len(self.current_line_indicator) + " "
      else:
          result = "   "
      if blank_line.begin_lineno == blank_line.end_lineno:
          return (
              result
              + self.line_number_format_string.format(
                  blank_line.begin_lineno
              )
              + "\n"
          )
      return result + "   {}\n".format(self.line_number_gap_string)
  
imports: import inspect
  import sys
  import traceback
  from types import FrameType, TracebackType
  from typing import Union, Iterable
  from stack_data import style_with_executing_node, Options, Line, FrameInfo, LINE_GAP, Variable, RepeatedFrames, BlankLineRange, BlankLines
  from stack_data.utils import assert_
label_desc: Use image node_id 13 for calling the Formatter obj's underlying member method code with example usage: obj.format_blank_lines_linenumbers(blank_line) and returns: unknown, unknown