BingMainPage.Actions.cs

public partial class BingMainPage : AssertedNavigatablePage
{
    public BingMainPage(IWebDriver driver) : base(driver)
    {
    }

    public override string Url => @"http://www.bing.com/";


    public void Search(string textToType)
    {
        SearchBox.Clear();
        SearchBox.SendKeys(textToType);
        GoButton.Click();
    }
}