aspect Predicate {
	interface Predicate<T> {
		boolean holds(T that);
		
		public static final Predicate<Object> TRUE = new Predicate<Object>() {
			public boolean holds(Object that) {
				return true;
			}
		};
		
		public static final Predicate<Object> FALSE = new Predicate<Object>() {
			public boolean holds(Object that) {
				return false;
			}
		};
	}
}