code: def draw(self):
      if hasattr(self._renderer.gc, "ctx"):
          self.figure.draw(self._renderer)
      super(FigureCanvasQTCairo, self).draw()
  
file_path: catboost/contrib/python/matplotlib/py2/matplotlib/backends/backend_qt5cairo.py
imports: import six
  from .backend_cairo import cairo, FigureCanvasCairo, RendererCairo
  from .backend_qt5 import QtCore, QtGui, _BackendQT5, FigureCanvasQT
  from .qt_compat import QT_API
label_desc: Use image node_id 2 for calling the FigureCanvasQTCairo obj's underlying member method code with example usage: obj.draw() without return types