class PageList {

    long tryFlushLock( long pageRef )
    {
        return OffHeapPageLock.tryFlushLock( offLock( pageRef ) );
    }

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

}