code: def __init__(self):
      super().__init__()
  
imports: import asyncio
  from ..base import BaseApplicationBackend, BaseCanvasBackend, BaseTimerBackend
  from ...app import Timer
  from ...util import keys
  from ._offscreen_util import OffscreenContext, FrameBufferHelper
label_desc: Use image node_id 1 to create a new ApplicationBackend object from inherited base classes: BaseApplicationBackend with example: obj = ApplicationBackend()