this.streamEquivalenceMap = new HashMap<Stream, StreamEquivalenceClass>();
	public StreamResourceTracker(StreamFactory[] streamFactoryList,		RepositoryLookupFailureCallback lookupFailureCallback) {		this.streamFactoryList = streamFactoryList;		this.lookupFailureCallback = lookupFailureCallback;		this.streamOpenLocationMap = new HashMap<Location, Stream>();		this.uninterestingStreamEscapeSet = new HashSet<Stream>();		this.streamEscapeSet = new TreeSet<StreamEscape>();//		FIXME: not ready yet//		this.streamEquivalenceMap = new HashMap<Stream, Set<Stream>>();	}