func validateWasmPluginMatch(selectors []*extensions.WasmPlugin_TrafficSelector) error {
	if len(selectors) == 0 {
		return nil
	}
	for selIdx, sel := range selectors {
		if sel == nil {
			return fmt.Errorf("spec.Match[%d] is nil", selIdx)
		}
		for portIdx, port := range sel.Ports {
			if port == nil {
				return fmt.Errorf("spec.Match[%d].Ports[%d] is nil", selIdx, portIdx)
			}