Optional:    true,
		},
	}
)

// DefaultHelpPostfix - Helper function to add (default: $value) messages in config help
func DefaultHelpPostfix(subsystem KVS, key string) string {
	val, found := subsystem.Lookup(key)
	if !found || val == "" {
		return ""
	}
	return " (default: '" + val + "')"

			Optional:    true,
			Type:        "on|off",
		},
		config.HelpKV{
			Key:         target.AmqpInternal,
			Description: "set to 'on' for exchange to be not used directly by publishers, but only when bound to other exchanges",
			Optional:    true,
			Type:        "on|off",
		},
		config.HelpKV{
			Key:         target.AmqpAutoDeleted,
			Description: "auto delete queue when set to 'on', when there are no consumers",