'Iterate over all clients in a threadpool.
Args:
max_age: Maximum age in seconds of clients to check.
client_chunksize: A function to call with each client urn.
**kwargs: Arguments passed to init.'

def __init__(self, max_age, client_chunksize=25, **kwargs):

    super(IterateAllClients, self).__init__(**kwargs)
    self.client_chunksize = client_chunksize
    self.max_age = max_age
