@loopback/docs
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Documentation for LoopBack 4
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Markdown
lang: en
title: 'API docs: authentication.authenticationstrategyprovider.metadata'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.authentication.authenticationstrategyprovider.metadata.html
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[Home](./index.md) > [@loopback/authentication](./authentication.md) > [AuthenticationStrategyProvider](./authentication.authenticationstrategyprovider.md) > [metadata](./authentication.authenticationstrategyprovider.metadata.md)
## AuthenticationStrategyProvider.metadata property
<b>Signature:</b>
```typescript
protected metadata?: AuthenticationMetadata | undefined;
```