def tag(self, tag, value=True):
        self.tags[tag] = value
Emit DROP statements for the given schema entity.
dataset/ETHPy150Open ProgVal/Limnoria/src/ircmsgs.py/IrcMsg.tag--crossover with--dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/engine/interfaces.py/Connectable.drop