code: def print_rgba(self, fobj):
      width, height = self.get_width_height()
      buf = self._get_printed_image_surface().get_data()
      fobj.write(
          cbook._premultiplied_argb32_to_unmultiplied_rgba8888(
              np.asarray(buf).reshape((width, height, 4))
          )
      )
  
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 6 for calling the FigureCanvasCairo obj's underlying member method code with example usage: obj.print_rgba(fobj) without return types