class VerbosePageCacheTracer extends DefaultPageCacheTracer {

    @Override
    public MajorFlushEvent beginCacheFlush()
    {
        log.info( "Start whole page cache flush." );
        return new PageCacheMajorFlushEvent( flushedPages.get(), flushBytesWritten.get(), clock.nanos() );
    }

      VerbosePageCacheTracer( Log log, SystemNanoClock clock );

}