src/vs/workbench/contrib/extensions/browser/extensionsActions.ts/InstallDropdownAction/constructor
class InstallDropdownAction:	constructor(
		@IInstantiationService instantiationService: IInstantiationService,
	) {
		super(`extensions.installActions`, '', [
			instantiationService.createInstance(InstallAndSyncAction),
			instantiationService.createInstance(InstallAction),
		]);
	}