public static LongStream merge(final LongStream a, final LongStream b, final LongStream c, final LongBiFunction<Nth> nextSelector) {
        return merge(merge(a, b, nextSelector), c, nextSelector);
    }
public static LongStream merge ( final LongStream a , final LongStream b , final LongStream c , final LongBiFunction < Nth > nextSelector ) { return merge ( merge ( a , b , nextSelector ) , c , nextSelector ) ; }
@param a
@param b
@param c
@param nextSelector first parameter is selected if <code>Nth.FIRST</code> is returned, otherwise the second parameter is selected.
@return