public void
addRecord(Record r, int section) {
	if (sections[section] == null)
		sections[section] = new LinkedList();
	header.incCount(section);
	sections[section].add(r);
}
Adds a record to a section of the Message, and adjusts the header.
@see Record
@see Section
src/main/java/core/org/xbill/DNS/Message.java