code: def __init__(self):
      self.called = []
  
imports: from __future__ import annotations
  from contextlib import contextmanager
  import pytest
  from prompt_toolkit.application import Application
  from prompt_toolkit.application.current import set_app
  from prompt_toolkit.input.defaults import create_pipe_input
  from prompt_toolkit.key_binding.key_bindings import KeyBindings
  from prompt_toolkit.key_binding.key_processor import KeyPress, KeyProcessor
  from prompt_toolkit.keys import Keys
  from prompt_toolkit.layout import Layout, Window
  from prompt_toolkit.output import DummyOutput
label_desc: Use image node_id 1 to create a new Handlers object  with example: obj = Handlers()