def getting(self):
        """
        Returns tuples corresponding to the number and type of each
        resource in the trade from getter->giver

        :return: eg [(2, Terrain.wood), (1, Terrain.brick)]
        """
        c = Counter(self._get.copy())
        return [(n, t) for t, n in c.items()]
Returns tuples corresponding to the number and type of each
        resource in the trade from getter->giver

        :return: eg [(2, Terrain.wood), (1, Terrain.brick)]