public static Map<Integer, Set<Class<?>>> simpleParameterClasses(final Class<?>... classes)
	{
		final Map<Integer, Set<Class<?>>> res = new HashMap<>(classes.length);
		for (int i = 0; i < classes.length; i++)
		{
			final Set<Class<?>> set = new HashSet<>(1);
			set.add(classes[i]);
			res.put(i, set);
		}
		return res;
	}