def copy(self):
        return self.__copy__()
Generator returns all of the troves included by topTrove, including
dataset/ETHPy150Open roglew/pappy-proxy/pappyproxy/http.py/HTTPMessage.copy--crossover with--dataset/ETHPy150Open sassoftware/conary/conary/repository/trovesource.py/AbstractTroveSource.walkTroveSet