private int addressAtGivenLocksAndBufferAcquired(ByteBuffer pageBuffer,
                                                     int slotIndex) {
      final int offsetInNode = indexToOffset(slotIndex);
      return getIntGivenLocksAndBufferAcquired(pageBuffer, offsetInNode);
    }
private int addressAtGivenLocksAndBufferAcquired(ByteBuffer pageBuffer,
                                                     int slotIndex)