class_docstr: A "buffered" filter pen that accumulates contour data, passes
  it through a ``filterContour`` method when the contour is closed or ended,
  and finally draws the result with the output pen.
  
  Components are passed through unchanged.
code: def endPath(self):
      super(ContourFilterPen, self).endPath()
      self._flushContour()
  
imports: from fontTools.pens.basePen import AbstractPen
  from fontTools.pens.pointPen import AbstractPointPen
  from fontTools.pens.recordingPen import RecordingPen
label_desc: Use image node_id 3 for calling the ContourFilterPen obj's underlying member method code with example usage: obj.endPath() without return types