# File lib/openstack/network/connection.rb, line 169
    def list_qos_policies(options = {})
      path = options.empty? ? "/qos/policies" : "/qos/policies?#{options.to_query}"
      response = @connection.req("GET", path)
      OpenStack::Exception.raise_exception(response) unless response.code.match(/^20.$/)
      qos_hash = JSON.parse(response.body)["policies"]
      qos_hash.inject([]){|res, current| res << OpenStack::Network::QoSPolicy.new(@connection, current); res}
    end