# File lib/Dnsruby/resource/resource.rb, line 251
    def klass=(klass)
      if (@type != Types::OPT)
        @klass= Classes.new(klass)
      else
        if (klass.class == Classes)
          @klass = klass
        else
          @klass = Classes.new("CLASS#{klass}")
        end
      end
    end