src/vs/workbench/browser/parts/compositeBar.ts/CompositeBarModel/createCompositeBarItem
class CompositeBarModel:	private createCompositeBarItem(id: string, name: string | undefined, order: number | undefined, pinned: boolean, visible: boolean): ICompositeBarModelItem {
		const options = this.options;
		return {
			id, name, pinned, order, visible,
			activity: [],
			get activityAction() {
				return options.getActivityAction(id);
			},
			get pinnedAction() {
				return options.getCompositePinnedAction(id);
			}
		};
	}