Interface defining a builder of routine objects executed in a dedicated service.
Note that the configuration of the maximum number of concurrent invocations will not be shared
among synchronous and asynchronous invocations, but the invocations created inside the service
and the synchronous will respect the same limit separately.
Note also that it is responsibility of the caller to ensure that the started invocations have
completed or have been aborted when the relative context (for example the activity) is destroyed,
so to avoid the leak of IPC connections.
The local context of the invocations will be the specific service instance.
Created by davide-maestroni on 03/07/2015.