docs: private boolean isCategorySystemService(Field field) {
  		
  		if(!(field.getName().endsWith("_service") 
  			|| field.getName().endsWith("_SERVICE"))) {
  			
  			return false;
  		}
  		
  		Field[] declaredFields = Context.class.getDeclaredFields();
  		
  		for (Field declaredField : declaredFields) {
  			
  			if(String.class.isAssignableFrom(declaredField.getType())
  				&& declaredField.getName().equalsIgnoreCase(field.getName())) {
  				
  				return true;
  			}
  		}
  		
  		return false;
  	}