How to use Datasource in RadioGroup

How can i use DataSource in RadioGroup instead of static data items ?

In below code instead of hard coded items i want to use the Datasource so that the Radio optoion get rendered based on data returned by API.

                       {
                        field: "RadioGroup",
                        editor: "RadioGroup",
                        label: "Select User:",
                        validation: { required: true },
                        editorOptions: {
                            items: [{"label":"Admin","value":"1"}, {"label":"Admin 2","value":"2"},{"label":"Admin 3","value":"3"}],
                            layout: "horizontal",
                            labelPosition: "after"
                        }
                    }