code: def restore_region(self, region):
      surface = self._renderer.gc.ctx.get_target()
      if not isinstance(surface, cairo.ImageSurface):
          raise RuntimeError(
              "restore_region only works when rendering to an ImageSurface"
          )
      surface.flush()
      sw = surface.get_width()
      sh = surface.get_height()
      sly, slx = region._slices
      (
          np.frombuffer(surface.get_data(), np.uint32).reshape(
              (sh, sw)
          )[sly, slx]
      ) = region._data
      surface.mark_dirty_rectangle(
          slx.start,
          sly.start,
          slx.stop - slx.start,
          sly.stop - sly.start,
      )
  
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 4 for calling the FigureCanvasCairo obj's underlying member method code with example usage: obj.restore_region(region) without return types