---
lang: en
title: 'API docs: metadata.decoratorfactory.key'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.metadata.decoratorfactory.key.html
---

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[Home](./index.md) &gt; [@loopback/metadata](./metadata.md) &gt; [DecoratorFactory](./metadata.decoratorfactory.md) &gt; [key](./metadata.decoratorfactory.key.md)

## DecoratorFactory.key property

<b>Signature:</b>

```typescript
protected key: string;
```

