code: def _renderer_init(self):
      pass
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import numpy
  import warnings
  from .None import backend_agg, backend_gtk3
  from .backend_cairo import cairo, HAS_CAIRO_CFFI
  from .backend_gtk3 import _BackendGTK3
  from matplotlib import transforms
label_desc: Use image node_id 2 for calling the FigureCanvasGTK3Agg obj's underlying member method code with example usage: obj._renderer_init() without return types