docs: protected void collectMethods(Class<? extends AbstractExtraLanguageValidator> clazz,
  			Collection<Class<?>> visitedClasses,
  			Collection<MethodWrapper> result) {
  		if (!visitedClasses.add(clazz)) {
  			return;
  		}
  		for (final Method method : clazz.getDeclaredMethods()) {
  			if (method.getAnnotation(Check.class) != null && method.getParameterTypes().length == 1) {
  				result.add(createMethodWrapper(method));
  			}
  		}
  		final Class<? extends AbstractExtraLanguageValidator> superClass = getSuperClass(clazz);
  		if (superClass != null) {
  			collectMethods(superClass, visitedClasses, result);
  		}
  	}