class PageList {

    void unlockWrite( long pageRef )
    {
        OffHeapPageLock.unlockWrite( offLock( pageRef ) );
    }

      PageList( int pageCount, int cachePageSize, MemoryAllocator memoryAllocator, SwapperSet swappers,
              long victimPageAddress, long bufferAlignment );
      PageList( PageList pageList );

}