code: public static <T> T createServiceInstance(T impl, String category, String subsystem, Class<T> interf, Class<?>... additionalInterfaces){
  		return createServiceInstance(impl, null, category, subsystem, interf, additionalInterfaces);
  	}
docs: Shortcut method to create service instance. Creates an instance with service interface name as instance name, custom category and subsystem, ServiceStatsCallHandler and ServiceStatsFactory.
  @param <T>
  @param impl
  @param category
  @param subsystem
  @param interf
  @param additionalInterfaces
  @return a newly created proxy of type T.