code: public long getLong() {
          return ((long) (_buffer[_offset++] & 0xff) << 56 | (long) (_buffer[_offset++] & 0xff) << 48
                  | (long) (_buffer[_offset++] & 0xff) << 40 | (long) (_buffer[_offset++] & 0xff) << 32
                  | (long) (_buffer[_offset++] & 0xff) << 24 | (long) (_buffer[_offset++] & 0xff) << 16
                  | (long) (_buffer[_offset++] & 0xff) << 8 | (long) (_buffer[_offset++] & 0xff));
      }
docs: Get a long from the buffer
  
  @return long