code: def savefig(
      filename, width=None, height=None, fig=None, timeout_seconds=10, output_widget=None, headless=False, devmode=False
  ):
      
      __, ext = os.path.splitext(filename)
      format = ext[1:]
      assert format in ['png', 'jpeg', 'svg'], "image format must be png, jpeg or svg"
      with open(filename, "wb") as f:
          f.write(
              _screenshot_data(
                  timeout_seconds=timeout_seconds,
                  output_widget=output_widget,
                  format=format,
                  width=width,
                  height=height,
                  fig=fig,
                  headless=headless,
                  devmode=devmode,
              )
          )
docs: Save the figure to an image file.
  
      :param str filename: must have extension .png, .jpeg or .svg
      :param int width: the width of the image in pixels
      :param int height: the height of the image in pixels
      :type fig: ipyvolume.widgets.Figure or None
      :param fig: if None use the current figure
      :param float timeout_seconds: maximum time to wait for image data to return
      :param ipywidgets.Output output_widget: a widget to use as a context manager for capturing the data
      :param bool headless: if True, use headless chrome to save figure
      :param bool devmode: if True, attempt to get index.js from local js/dist folder