---
layout: docs
title: renderInterfaceList
id: trait.Facebook.HackCodegen.CodegenClassWithInterfaces.renderInterfaceList
docid: trait.Facebook.HackCodegen.CodegenClassWithInterfaces.renderInterfaceList
permalink: /docs/reference/trait.Facebook.HackCodegen.CodegenClassWithInterfaces.renderInterfaceList/
---
# Facebook\\HackCodegen\\CodegenClassWithInterfaces::renderInterfaceList()




``` Hack
protected function renderInterfaceList(
  Facebook\HackCodegen\HackBuilder $builder,
  string $introducer,
): void;
```




## Parameters




- [` Facebook\HackCodegen\HackBuilder `](<class.Facebook.HackCodegen.HackBuilder.md>)`` $builder ``
- ` string $introducer `




## Returns




+ ` void `