code: def has_line_above() -> bool:
      document = get_app().current_buffer.document
      return document.cursor_position_row != 0
  
imports: import ast
  import re
  import signal
  import sys
  from typing import Callable, Dict, Union
  from prompt_toolkit.application.current import get_app
  from prompt_toolkit.enums import DEFAULT_BUFFER, SEARCH_BUFFER
  from prompt_toolkit.key_binding import KeyPressEvent
  from prompt_toolkit.filters import Condition, Filter, emacs_insert_mode, has_completions
  from prompt_toolkit.filters import has_focus
  from prompt_toolkit.filters import Always, Never, has_selection, has_suggestion, vi_insert_mode, vi_mode
  from prompt_toolkit.layout.layout import FocusableElement
  from IPython.core.getipython import get_ipython
  from IPython.core.guarded_eval import _find_dunder, BINARY_OP_DUNDERS, UNARY_OP_DUNDERS
  from IPython.terminal.shortcuts import auto_suggest
  from IPython.utils.decorators import undoc
label_desc: Use image node_id 5 for calling a global function with example usage: has_line_above() and returns: unknown