### Question:
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 );   }### Answer:
@Test public void exclusiveLockMustFailFlushLock() { assertFalse( pageList.tryFlushLock( pageRef ) != 0 ); }