src/main/java/wyfs/lang/Content.java
public static <T> Filter<T> or(final Filter<T> f1, final Filter<T> f2) {
		return new Filter<T>() {
			@Override
			public boolean matches(Path.ID id, Content.Type<T> ct) {
				return f1.matches(id, ct) || f2.matches(id, ct);
			}
			@Override
			public boolean matchesSubpath(Path.ID id) {
				return f1.matchesSubpath(id) || f2.matchesSubpath(id);
			}
			@Override
			public String toString() {
				return f1.toString() + "|" + f2.toString();
			}
		};
	}
public static <T> Filter<T> or(final Filter<T> f1, final Filter<T> f2) {
		return new Filter<T>() {
			@Override
			public boolean matches(Path.ID id, Content.Type<T> ct) {
				return f1.matches(id, ct) || f2.matches(id, ct);
			}
			@Override
			public boolean matchesSubpath(Path.ID id) {
				return f1.matchesSubpath(id) || f2.matchesSubpath(id);
			}
			@Override
			public String toString() {
				return f1.toString() + "|" + f2.toString();
			}
		};
	}
public static < T > Filter < T > or ( final Filter < T > f1 , final Filter < T > f2 ) { return new Filter < T > ( ) { @ Override public boolean matches ( Path . ID id , Content . Type < T > ct ) { return f1 . matches ( id , ct ) || f2 . matches ( id , ct ) ; } @ Override public boolean matchesSubpath ( Path . ID id ) { return f1 . matchesSubpath ( id ) || f2 . matchesSubpath ( id ) ; } @ Override public String toString ( ) { return f1 . toString ( ) + "|" + f2 . toString ( ) ; } } ; }
Combine two filters together produce one filter whose items must be
matched by at least one of the original filters.

@param f1
@param f2
@return
Combine two filters together produce one filter whose items must be matched by at least one of the original filters .