# BEFORE

class FooRole(Role):

    def set_variables(self):
        return dict(
            x=5
        )

    def set_resources(self):
       return Resources(
           File(name="/etc/blorp.cfg", from_template="./blorp.cfg.j2", ..., notifies="restart_blorp")
       )
   
    def set_handlers(self):
       return Handlers(
            restart_blorp = Service(name="blorp", restarted=True)
       )
   
   
# AFTER

class FooRole(Role):

    def main(self):
         x = 5
         blorp_result = File(name="/etc/blorp.cfg", from_template="./blorp.cfg.j2")
         if blorp_result.changed():
              Service(name="blorp", restarted=True)