Collapse row icon definition.
Examples
Right Down Icons
<table id="grid"></table>
<script>
$('#grid').grid({
primaryKey: 'ID',
dataSource: '/Players/Get',
columns: [ { field: 'Name', sortable: true }, { field: 'PlaceOfBirth' } ],
grouping: { groupBy: 'CountryName' },
icons: {
expandGroup: '<i class="material-icons">keyboard_arrow_right</i>',
collapseGroup: '<i class="material-icons">keyboard_arrow_down</i>'
}
});
</script>