title: Matching multiple objects using IValueProvider.GetValue
body: <p>I have following piece of code:</p>
  
  <pre><code>var ids = bindingContext
              .ValueProvider
              .GetValue("Factors.Item1")
              .AttemptedValue;
  </code></pre>
  
  <p>the get value's argument might be either <code>"Factors.Item1"</code> or <code>"Factors.Item_Check"</code>. I wonder if there's a way for checking both cases in one line, for example something like this:</p>
  
  <pre><code>var ids = bindingContext
              .ValueProvider
              .GetValue("Factors.Item1" | "Factors.Item_Check")
              .AttemptedValue;
  </code></pre>