# File lib/bunny/client08.rb, line 255
                def qos(opts = {})

      send_frame(
        Qrack::Protocol::Basic::Qos.new({ :prefetch_size => 0, :prefetch_count => 1, :global => false }.merge(opts))
      )

                        method = next_method
                        
                        check_response(method, Qrack::Protocol::Basic::QosOk, "Error specifying Quality of Service")

      # return confirmation
      :qos_ok
    end