4.4.9 hook(Fun, Prio) ¶

-spec hook(fun(({atom(), options()}) -> {ok,
                                         module()} |
                                        undefined),
           classy_hook:prio()) -> classy_hook:hook().

Register a discovery strategy.

Callbacks registered here match on the discovery_strategy configuration and return callback module implementing classy_discovery_strategy behavior.

The first hook that returns {ok, Module} wins and handles all the callbacks for the next discovery cycle.