type filterChain struct {
	rbacHTTP []*rbachttp.RBAC
	rbacTCP  []*rbactcp.RBAC
}

type parsedListener struct {
	filterChains []*filterChain
}

func getFilterConfig(filter *listener.Filter, out proto.Message) error {
	switch c := filter.ConfigType.(type) {
	case *listener.Filter_TypedConfig:
		if err := c.TypedConfig.UnmarshalTo(out); err != nil {
			return err
		}
	}