src/vs/workbench/contrib/preferences/browser/preferencesWidgets.ts/SearchWidget/createInputBox
class SearchWidget:	protected createInputBox(parent: HTMLElement): HistoryInputBox {
		const box = this._register(new ContextScopedHistoryInputBox(parent, this.contextViewService, this.options, this.contextKeyService));
		this._register(attachInputBoxStyler(box, this.themeService));

		return box;
	}