src/vs/workbench/contrib/extensions/browser/extensionsActions.ts/AbstractInstallExtensionsInServerAction/onDidAccept
class AbstractInstallExtensionsInServerAction:	private async onDidAccept(selectedItems: ReadonlyArray<IExtensionPickItem>): Promise<void> {
		if (selectedItems.length) {
			const localExtensionsToInstall = selectedItems.filter(r => !!r.extension).map(r => r.extension!);
			if (localExtensionsToInstall.length) {
				await this.progressService.withProgress(
					{
						location: ProgressLocation.Notification,
						title: localize('installing extensions', "Installing Extensions...")
					},
					() => this.installExtensions(localExtensionsToInstall));
				this.notificationService.info(localize('finished installing', "Successfully installed extensions."));
			}
		}
	}