@loopback/docs/site/apidocs/authentication.authmetadataprovider._constructor_.md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: authentication.authmetadataprovider._constructor_'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
editurl: https://github.com/strongloop/loopback-next/tree/master/packages/authentication
permalink: /doc/en/lb4/apidocs.authentication.authmetadataprovider._constructor_.html
---

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[Home](./index.md) &gt; [@loopback/authentication](./authentication.md) &gt; [AuthMetadataProvider](./authentication.authmetadataprovider.md) &gt; [(constructor)](./authentication.authmetadataprovider._constructor_.md)

## AuthMetadataProvider.(constructor)

Constructs a new instance of the `AuthMetadataProvider` class

<b>Signature:</b>

```typescript
constructor(controllerClass: Constructor<{}>, methodName: string, options?: AuthenticationOptions);
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  controllerClass | <code>Constructor&lt;{}&gt;</code> |  |
|  methodName | <code>string</code> |  |
|  options | <code>AuthenticationOptions</code> |  |