code: def operate_and_get_next(event):
      """
      Accept the current line for execution and fetch the next line relative to
      the current line from the history for editing.
      """
      buff = event.current_buffer
      new_index = buff.working_index + 1
  
      # Accept the current input. (This will also redraw the interface in the
      # 'done' state.)
      buff.accept_action.validate_and_handle(event.cli, buff)
  
      # Set the new index at the start of the next run.
      def set_working_index():
          if new_index < len(buff._working_lines):
              buff.working_index = new_index
  
      event.cli.pre_run_callables.append(set_working_index)
  
imports: from __future__ import unicode_literals
  from prompt_toolkit.enums import IncrementalSearchDirection, SEARCH_BUFFER
  from prompt_toolkit.selection import PasteMode
  from six.moves import range
  import six
  from .completion import generate_completions, display_completions_like_readline
  from prompt_toolkit.document import Document
  from prompt_toolkit.enums import EditingMode
  from prompt_toolkit.key_binding.input_processor import KeyPress
  from prompt_toolkit.keys import Keys
label_desc: Use image node_id 48 for calling a global function with example usage: operate_and_get_next(event) without return types