/guava/guava/src/com/google/common/collect/Sets.java
} return Stream.concat( set1.stream( ) , set2.stream( ).filter( ( E e) -> !set1.contains( e) ) ) ;
return Stream.concat ( set1.stream ( ) , set2.stream ( ) .filter ( ( E e ) -> !set1.contains ( e ) ) ) ; }
return endOfData(); } }; } @Override public Stream<E> stream() { <extra_id_0> @Override public Stream<E> parallelStream() { return stream().parallel(); } @Override public boolean contains(@CheckForNull Object object) {