def getUnion(self, other):
        newSet = SelectionSet( self )
        newSet.union(other)
        return newSet
:rtype: `SelectionSet`
dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/core/nodetypes.py/SelectionSet.getUnion