> Documentation index: https://www.gooddata.ai/docs/gooddata-ui/llms.txt lists every page of these docs as Markdown.

# isMdObjectDefinition()

- Package: [@gooddata/sdk-model](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/index.md)
- Kind: function
- Stability: beta
- Source: https://github.com/gooddata/gooddata-ui-sdk/blob/rel/11.64/libs/sdk-model/src/ldm/metadata/next.ts

> **Beta API.** Mostly stable, but details may change in a minor release, outside SemVer. See [API maturity](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/platform/api-maturity/index.md).
> 

Type guard checking whether input is an instance of [IMdObjectDefinition](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.imdobjectdefinition/index.md).

**Signature:**

```typescript
export declare function isMdObjectDefinition(obj: unknown): obj is IMdObjectDefinition;
```

## Parameters

| Parameter | Type | Description |
| --- | --- | --- |
| obj | unknown |  |

**Returns:**

obj is [IMdObjectDefinition](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-model/sdk-model.imdobjectdefinition/index.md)