Tarearbol.DynamicManager.handle_state_change
You're seeing just the callback
handle_state_change
, go back to Tarearbol.DynamicManager module for more information.
Specs
handle_state_change(state :: :down | :up | :starting | :unknown) :: :ok | :restart
Declares an instance-wide callback to report state; if the startup process
takes a while, it’d be run in handle_continue/2
and this function will be
called after it finishes so that the application might start using it.
If the application is not interested in receiving state updates, e. g. when all it needs from runners is a side effect, there is a default implementation that does nothing.