src/vs/editor/contrib/linkedEditing/linkedEditing.ts/LinkedEditingAction/run
class LinkedEditingAction:	run(_accessor: ServicesAccessor, editor: ICodeEditor): Promise<void> {
		const controller = LinkedEditingContribution.get(editor);
		if (controller) {
			return Promise.resolve(controller.updateRanges(true));
		}
		return Promise.resolve();
	}