This module is still experimental. Use at your own peril.
Often times it is more conveinient to throttle the number of times the Provider
is invoked to fetch the next request than for the provider to keep tabs of
how many requests it has sent so far.
This component keeps track of how many URLs have gone through send_request()
and back to handle_response(), and will prevent Gungho from calling the
provider to fetch the next request.