if (n == 0) { return Collections.EMPTY_SET; } HashSet aliasSet = new HashSet(n);
HashSet aliasSet = new HashSet (n);
	public final Set aliases() {		if (aliases == null) {			return Collections.EMPTY_SET;		}		// should we cache the aliasSet instead?		int n = aliases.length;		if (n == 0) {			return Collections.EMPTY_SET;		}		HashSet aliasSet = new HashSet(n);		for (int i = 0; i < n; ++i)			aliasSet.add(aliases[i]);		return Collections.unmodifiableSet(aliasSet);	}