@property
    def _creator(self):
        def new_child_element(obj):
            return OxmlElement(self._nsptagname)
        return new_child_element
unloads the references that is not related to the selected objects
dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/xmlchemy.py/_BaseChildElement._creator--crossover with--dataset/ETHPy150Open eoyilmaz/anima/anima/env/mayaEnv/toolbox.py/Reference.unload_unselected_references