'Add a :class:`.PoolListener`-like object to this pool.
``listener`` may be an object that implements some or all of
PoolListener, or a dictionary of callables containing implementations
of some or all of the named methods in PoolListener.'

@util.deprecated(2.7, 'Pool.add_listener    is    deprecated.        Use    event.listen()')
def add_listener(self, listener):

    interfaces.PoolListener._adapt_listener(self, listener)
