src/vs/workbench/services/userData/browser/userDataInit.ts/UserDataInitializationService/initializeExtensions
class UserDataInitializationService:	private async initializeExtensions(instantiationService: IInstantiationService): Promise<void> {
		try {
			await Promise.all([this.initializeInstalledExtensions(instantiationService), this.initializeNewExtensions(instantiationService)]);
		} finally {
			this.initialized.push(SyncResource.Extensions);
		}
	}