code: public static long encodeLo(long encoded, int lo) {
          long h = (encoded >> 32) & 0xFFFF_FFFFL;
          long l = ((long) lo) & 0xFFFF_FFFFL;
          return (h << 32) + l;
      }
docs: Sets the lo value into the given encoded value.
  
  @param encoded the encoded value
  @param lo      the lo value
  @return the new encoded value