code: public static LongStreamEx of(Long[] array) {
          return seq(Arrays.stream(array).mapToLong(Long::longValue));
      }
docs: Returns a sequential ordered {@code LongStreamEx} whose elements are the
  unboxed elements of supplied array.
  
  @param array the array to create the stream from.
  @return the new stream
  @see Arrays#stream(Object[])
  @since 0.5.0