@loopback/docs/site/apidocs/metadata.propertydecoratorfactory.mergewithown.md

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---
lang: en
title: 'API docs: metadata.propertydecoratorfactory.mergewithown'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
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editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/metadata
permalink: /doc/en/lb4/apidocs.metadata.propertydecoratorfactory.mergewithown.html
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[Home](./index.md) &gt; [@loopback/metadata](./metadata.md) &gt; [PropertyDecoratorFactory](./metadata.propertydecoratorfactory.md) &gt; [mergeWithOwn](./metadata.propertydecoratorfactory.mergewithown.md)

## PropertyDecoratorFactory.mergeWithOwn() method

**Signature:**

```typescript
protected mergeWithOwn(ownMetadata: MetadataMap<T>, target: Object, propertyName?: string, descriptorOrParameterIndex?: TypedPropertyDescriptor<any> | number): MetadataMap<T>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  ownMetadata | [MetadataMap](./metadata.metadatamap.md)<!-- -->&lt;T&gt; |  |
|  target | Object |  |
|  propertyName | string | _(Optional)_ |
|  descriptorOrParameterIndex | TypedPropertyDescriptor&lt;any&gt; \| number | _(Optional)_ |

**Returns:**

[MetadataMap](./metadata.metadatamap.md)<!-- -->&lt;T&gt;