if (ChainBuilderAgent.DEBUG) {
if (ChainBuilderAgent.DEBUG_TIMING) {
	public Collection getChains() {				Collection res = null;		long start;		// if we're done, go for it.		if (chainHash != null && chainHash.size() > 0) {			res = chainHash.values();		}		else {			if (gettingChains == false) {				if (ChainBuilderAgent.DEBUG) {					start = System.currentTimeMillis();				}				gettingChains = true;				retrieveChains();				gettingChains = false;				if (ChainBuilderAgent.DEBUG) {					long end = System.currentTimeMillis()-start;					System.err.println("time for retrieving chains.. "+end);				}				res = chainHash.values();			}		}		return res;	}