@loopback/docs/site/apidocs/rest.restserver._setuphandlerifneeded.md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: rest.restserver._setuphandlerifneeded'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.rest.restserver._setuphandlerifneeded.html
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[Home](./index.md) &gt; [@loopback/rest](./rest.md) &gt; [RestServer](./rest.restserver.md) &gt; [\_setupHandlerIfNeeded](./rest.restserver._setuphandlerifneeded.md)

## RestServer.\_setupHandlerIfNeeded() method

<b>Signature:</b>

```typescript
protected _setupHandlerIfNeeded(): void;
```
<b>Returns:</b>

`void`