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---
lang: en
title: 'API docs: metadata.decoratorfactory.inherit'
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.decoratorfactory.inherit.html
---
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[Home](./index.md) > [@loopback/metadata](./metadata.md) > [DecoratorFactory](./metadata.decoratorfactory.md) > [inherit](./metadata.decoratorfactory.inherit.md)
## DecoratorFactory.inherit() method
Inherit metadata from base classes. By default, this method merges base metadata into the spec if `allowInheritance` is set to `true`<!-- -->. To customize the behavior, this method can be overridden by sub classes.
**Signature:**
```typescript
protected inherit(inheritedMetadata: T | undefined | null): T;
```
## Parameters
<table><thead><tr><th>
Parameter
</th><th>
Type
</th><th>
Description
</th></tr></thead>
<tbody><tr><td markdown="1">
inheritedMetadata
</td><td markdown="1">
T \| undefined \| null
</td><td markdown="1">
Metadata from base classes for the member
</td></tr>
</tbody></table>
**Returns:**
T