src/vs/editor/standalone/browser/standaloneServices.ts/DynamicStandaloneServices/get
class DynamicStandaloneServices:	public get<T>(serviceId: ServiceIdentifier<T>): T {
		let r = <T>this._serviceCollection.get(serviceId);
		if (!r) {
			throw new Error('Missing service ' + serviceId);
		}
		return r;
	}