# File lib/dnstraverse/info_cache.rb, line 39
    def add(rrs)
      rrs.each {|rr| @data[key(rr)] = Array.new } # clear out
      for rr in rrs do
        @data[key(rr)].push rr
        Log.debug { "Adding to infocache: #{rr}" }
      end
      return nil
    end