src/vs/base/parts/quickinput/browser/quickInput.ts/QuickInputController/navigate
class QuickInputController:	navigate(next: boolean, quickNavigate?: IQuickNavigateConfiguration) {
		if (this.isDisplayed() && this.getUI().list.isDisplayed()) {
			this.getUI().list.focus(next ? QuickInputListFocus.Next : QuickInputListFocus.Previous);
			if (quickNavigate && this.controller instanceof QuickPick) {
				this.controller.quickNavigate = quickNavigate;
			}
		}
	}