I’m working on an Angular project where I am using the DevExpress DataGrid component. I want to add an icon to the rows that appear when the data is grouped by a certain column. Specifically, I’d like to display a custom icon next to the group headers.

I’m working on an Angular project where I use the DevExpress DataGridView component to display data. I want to enable grouping functionality for my grid, but I need to do it without sending any requests to an API. The data should be grouped using the data already available on the client-side.