def relate_to(self, part, reltype):
        rel = self.rels.get_or_add(reltype, part)
        return rel.rId
Returns the component that was clicked, which is somewhere inside
dataset/ETHPy150Open python-openxml/python-docx/docx/opc/package.py/OpcPackage.relate_to--crossover with--dataset/ETHPy150Open rwl/muntjac/muntjac/event/layout_events.py/LayoutClickEvent.getClickedComponent