# File lib/bunny/client09.rb, line 206
    def qos(opts = {})
      send_frame(Qrack::Protocol09::Basic::Qos.new({ :prefetch_size => 0, :prefetch_count => 1, :global => false }.merge(opts)))

      method = next_method

      check_response(method, Qrack::Protocol09::Basic::QosOk, "Error specifying Quality of Service")

      # return confirmation
      :qos_ok
    end