public boolean
findRecord(Record r) {
	for (int i = Section.ANSWER; i <= Section.ADDITIONAL; i++)
		if (sections[i] != null && sections[i].contains(r))
			return true;
	return false;
}
Determines if the given record is already present in any section.
@see Record
@see Section
src/main/java/core/org/xbill/DNS/Message.java