code: def set_context(self, ctx):
      surface = ctx.get_target()
      if hasattr(surface, "get_width") and hasattr(
          surface, "get_height"
      ):
          size = surface.get_width(), surface.get_height()
      elif hasattr(surface, "get_extents"):  # GTK4 RecordingSurface.
          ext = surface.get_extents()
          size = ext.width, ext.height
      else:  # vector surfaces.
          ctx.save()
          ctx.reset_clip()
          rect, *rest = ctx.copy_clip_rectangle_list()
          if rest:
              raise TypeError("Cannot infer surface size")
          _, _, *size = rect
          ctx.restore()
      self.gc.ctx = ctx
      self.width, self.height = size
  
imports: import functools
  import gzip
  import math
  import numpy
  from ..None import _api, cbook, font_manager
  from matplotlib.backend_bases import _Backend, FigureCanvasBase, FigureManagerBase, GraphicsContextBase, RendererBase
  from matplotlib.font_manager import ttfFontProperty
  from matplotlib.path import Path
  from matplotlib.transforms import Affine2D
label_desc: Use image node_id 2 for calling the RendererCairo obj's underlying member method code with example usage: obj.set_context(ctx) without return types