Can GetHandler return null when implementing IHttpHandlerFactory?
<p>Will this code throw an exception:</p>

<pre><code>public class MyHttpHandlerFactory : IHttpHandlerFactory
{
    public IHttpHandler GetHandler(HttpContext context, string requestType, string url, string pathTranslated)
    {
        if (...)
            return null;

            ...

        return new MyHttpHandler();
    }
}
</code></pre>
