public void ThenIShouldSeeThePostcodeInTheSubheader()
{
var subheaderAfterRestaurantSearch = StateManager.Get <string>(Result.RestaurantSubHeader.ToString());
var expectedPostcode = StateManager.Get <string>(Input.Postcode.ToString());
var defaultHeaderForTotalRestaurants = StateManager.Get <string>(Result.DefaultSubheaderForGivenPostcode.ToString());
ValidationHelper.AssertTrue(subheaderAfterRestaurantSearch, expectedPostcode);
ValidationHelper.AssertNotEqual(subheaderAfterRestaurantSearch, defaultHeaderForTotalRestaurants);
}