---
lang: en
title: 'API docs: authentication.authmetadataprovider._constructor_'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/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

**Signature:**

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

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

controllerClass


</td><td markdown="1">

[Constructor](./context.constructor.md)<!-- -->&lt;{}&gt;


</td><td markdown="1">


</td></tr>
<tr><td markdown="1">

methodName


</td><td markdown="1">

string


</td><td markdown="1">


</td></tr>
<tr><td markdown="1">

options


</td><td markdown="1">

[AuthenticationOptions](./authentication.authenticationoptions.md)


</td><td markdown="1">

_(Optional)_


</td></tr>
</tbody></table>