code: def _vispy_get_position(self):
      return 0, 0
  
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 18 for calling the CanvasBackend obj's underlying member method code with example usage: obj._vispy_get_position() and returns: int,  int