src/vs/workbench/contrib/update/browser/update.contribution.ts/DownloadUpdateAction/constructor
class DownloadUpdateAction:	constructor() {
		super({
			id: 'update.downloadUpdate',
			title: localize('downloadUpdate', "Download Update"),
			category: product.nameShort,
			f1: true,
			precondition: CONTEXT_UPDATE_STATE.isEqualTo(StateType.AvailableForDownload)
		});
	}