def instanceNumber(self):
        return self.__apimdagpath__().instanceNumber()
Get the group data for the root menu node.
dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/core/nodetypes.py/DagNode.instanceNumber--crossover with--dataset/ETHPy150Open nucleic/enaml/enaml/workbench/ui/menu_helper.py/RootMenuNode.group_data