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1
Vote

groupKey isn't used in customAggregate

It would make sense to me to have the properties passed to customAggregate be the same as those that are passed to groupCaptionTemplate and groupFooterTemplate. (Breaking Change reference: https://ej2.syncfusion.com/react/documentation/release-notes/18.4.47/?type=all#grid)

Specifically, as the release notes mention, the groupKey. 

```

// This is rough untested TypeScript code

const myCustomAggregateFunction= (props: any): any => {

const aggregate1 = getAggregateFromSomewhere(props.groupKey); // Fails

const aggregate2 = getAggregateFromSomewhere(props.key); // Old convention before version 18.4.47 works.

return(<span>{aggregate2}</span>);

}
```