@threads.Synchronized
  def __contains__(self, name):  # pylint: disable=invalid-name
    return (name in self._declarations and
            (self._declarations[name].has_default or
             name in self._loaded_values or
             name in self._flag_values))
This command creates a panel that derives from the base panel class that houses a blendShapeEditor.
dataset/ETHPy150Open google/openhtf/openhtf/conf.py/Configuration.__contains__--crossover with--dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.5/extras/completion/py/pymel/core/windows.py/blendShapePanel