class_docstr: A wrapper around an OSMesa context that destroy the context when
  garbage collected
class_docstr_tok: ["A","wrapper","around","an","OSMesa","context","that","destroy","the","context","when","garbage","collected"]
code: def __del__(self):
      osmesa.OSMesaDestroyContext(self.context)
  
imports: from __future__ import division
  from ...util.ptime import time
  from ..base import BaseApplicationBackend, BaseCanvasBackend, BaseTimerBackend
  from ...gloo import gl
  from time import sleep
label_desc: Use image node_id 3 for calling the OSMesaContext obj's underlying member method code with example usage: obj.__del__() without return types