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[Home](./index.md) &gt; [@soulmachines/smwebsdk](./smwebsdk.md) &gt; [ContentAwareness](./smwebsdk.contentawareness.md) &gt; [mutationCallback](./smwebsdk.contentawareness.mutationcallback.md)

## ContentAwareness.mutationCallback() method

Takes an array of MutationRecords and measures the ones marked with content awareness attributes

**Signature:**

```typescript
mutationCallback(mutations: readonly MutationRecord[]): void;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  mutations | readonly MutationRecord\[\] | an array of MutationRecords to check and measure |

**Returns:**

void