The cell to display each row for the column if the cell is an aggregate. If a function is passed, it will be passed a props object with the context of the cell and should return the property type for your adapter (the exact type depends on the adapter being used). API DocsGuide
Specify a value to be used for grouping rows on this column. If this option is not specified, the value derived from accessorKey / accessorFn will be used instead. API DocsGuide