An action block that starts an app service.
The fiber will proceed immediately without pause.
If the service class and/or package
is set and doesn’t evaluate to null
a specific app service will be started.
What data and actions a service support varies. Search for public documentation, or look at the app manifest for clues.
Note! If this block cause a SecurityException
failure is likely because the service isn’t exported (i.e. private),
it has been temporarily or permanently disabled, or it’s secured by a permission to prevent third-party apps from starting it.