public RRset []
getSectionRRsets(int section) {
	if (sections[section] == null)
		return emptyRRsetArray;
	List sets = new LinkedList();
	Record [] recs = getSectionArray(section);
	Set hash = new HashSet();
	for (int i = 0; i < recs.length; i++) {
		Name name = recs[i].getName();
		boolean newset = true;
		if (hash.contains(name)) {
			for (int j = sets.size() - 1; j >= 0; j--) {
				RRset set = (RRset) sets.get(j);
				if (set.getType() == recs[i].getRRsetType() &&
				    set.getDClass() == recs[i].getDClass() &&
				    set.getName().equals(name))
				{
					set.addRR(recs[i]);
					newset = false;
					break;
				}
			}
		}
		if (newset) {
			RRset set = new RRset(recs[i]);
			sets.add(set);
			hash.add(name);
		}
	}
	return (RRset []) sets.toArray(new RRset[sets.size()]);
}
Returns an array containing all records in the given section grouped into
RRsets.
@see RRset
@see Section
src/main/java/core/org/xbill/DNS/Message.java