@loopback/docs/site/apidocs/metadata.metadatakey.md

Documentation files rendered at [https://loopback.io](https://loopback.io)

---
lang: en
title: 'API docs: metadata.metadatakey'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/metadata
permalink: /doc/en/lb4/apidocs.metadata.metadatakey.html
---

<!-- Do not edit this file. It is automatically generated by API Documenter. -->

[Home](./index.md) &gt; [@loopback/metadata](./metadata.md) &gt; [MetadataKey](./metadata.metadatakey.md)

## MetadataKey type

Key for metadata access via reflection

**Signature:**

```typescript
export type MetadataKey<T, D extends DecoratorType> = MetadataAccessor<T, D> | string;
```
**References:** [DecoratorType](./metadata.decoratortype.md)<!-- -->, [MetadataAccessor](./metadata.metadataaccessor.md)