octarine-joins/src/main/java/com/codepoetics/octarine/joins/Joiner.java
public Stream<T2<L, Set<R>>> strictOneToMany(Collection<? extends R> rights) {
        return strictOneToMany(rights.stream());
    }
public Stream<T2<L, Set<R>>> strictOneToMany(Collection<? extends R> rights) {
        return strictOneToMany(rights.stream());
    }
public Stream < T2 < L , Set < R > > > strictOneToMany ( Collection < ? extends R > rights ) { return strictOneToMany ( rights . stream ( ) ) ; }
Strict one to many
Strict one to many