public static Set<TypeElement>
            typesIn(Set<? extends Element> elements) {
        return setFilter(elements, TYPE_KINDS, TypeElement.class);
    }
public static Set < TypeElement > typesIn ( Set < ? extends Element > elements ) { return setFilter ( elements , TYPE_KINDS , TypeElement . class ) ; }
Returns a set of types in {@code elements}.
@return a set of types in {@code elements}
@param elements the elements to filter