def append(self, item: "T") -> None:
        """
        Appends an item to the list in place

        :param item: The generic item of the list
        :type item: T
        """
        idx = len(self)
        self._relation_cache[item.__hash__()] = idx
        super().append(item)

        Appends an item to the list in place

        :param item: The generic item of the list
        :type item: T
        
ormar/relations/relation_proxy.py