code: public boolean
  findRRset(Name name, int type) {
  	return (findRRset(name, type, Section.ANSWER) ||
  		findRRset(name, type, Section.AUTHORITY) ||
  		findRRset(name, type, Section.ADDITIONAL));
  }
docs: Determines if an RRset with the given name and type is already
  present in any section.
  @see RRset
  @see Section