func (c *ConfigWriter) PrintListenerDump(filter ListenerFilter, outputFormat string) error {
	_, listeners, err := c.setupListenerConfigWriter()
	if err != nil {
		return err
	}
	filteredListeners := proto.MessageSlice{}
	for _, listener := range listeners {
		if filter.Verify(listener) {
			filteredListeners = append(filteredListeners, listener)
		}
	}
	out, err := json.MarshalIndent(filteredListeners, "", "    ")