def append(self, element):
        if not self.nestables:
            raise PlivoException("%s is not nestable" % self.name)
        if not element.name in self.nestables:
            raise PlivoException("%s is not nestable inside %s" / \
                            (element.name, self.name))
        self.elements.append(element)
        return element
dataset/ETHPy150Open plivo/plivohelper-python/plivohelper.py/Element.append/operator `%` -> `/`