this.segments = new QSequenceLineFileSystemCacheSegments(tempDirectory, maximumBytesInMemory, maximumSegmentSize);
this.segments = new QSequenceLineFileSystemCacheSegments(tempDirectoryFactory, maximumBytesInMemory, maximumSegmentSize);
	private QSequenceLineFileSystemCache(QSequenceLineRAData data, File tempDirectory, int maximumBytesInMemory, int maximumSegmentSize) {		this.data = data;		this.segments = new QSequenceLineFileSystemCacheSegments(tempDirectory, maximumBytesInMemory, maximumSegmentSize);	}