src/vs/workbench/browser/parts/compositeBarActions.ts/CompositeOverflowActivityActionViewItem/getActions
class CompositeOverflowActivityActionViewItem:	private getActions(): IAction[] {
		return this.getOverflowingComposites().map(composite => {
			const action = this.getCompositeOpenAction(composite.id);
			action.checked = this.getActiveCompositeId() === action.id;

			const badge = this.getBadge(composite.id);
			let suffix: string | number | undefined;
			if (badge instanceof NumberBadge) {
				suffix = badge.number;
			} else if (badge instanceof TextBadge) {
				suffix = badge.text;
			}

			if (suffix) {
				action.label = localize('numberBadge', "{0} ({1})", composite.name, suffix);
			} else {
				action.label = composite.name || '';
			}

			return action;
		});
	}