export global footer template in csv

[sibin.msan@gmail.com]

Having issue with exportToCSV(). footer & groupfooter are not fetched while exporting into csv. Please help

<ng-template pTemplate="footer">
<ng-container
*ngTemplateOutlet="
footerTemplate;
context: { $implicit: data, columns: selectedColumns }
"
></ng-container>
</ng-template>