Subsystem subsystem = element.getAnnotation(Subsystem.class);
if(nameToken!=null) {
System.out.println("Subsystem: " + subsystem.name() +" -> "+nameToken.value());
SubsystemExtension declared = new SubsystemExtension(
subsystem.name(), nameToken.value(),
subsystem.group(), subsystem.key()
);
declararions.add(declared);