'Update the WorkerChannelInstance
:param unicode capacity: The capacity
:param bool available: The available
:returns: Updated WorkerChannelInstance
:rtype: twilio.rest.taskrouter.v1.workspace.worker.worker_channel.WorkerChannelInstance'

def update(self, capacity=values.unset, available=values.unset):

    return self._proxy.update(capacity=capacity, available=available)
