/// <summary>
 /// If the value is a file or page reference, resolve it for example from
 /// File:4711 to Content/file4711.jpg. If the reference cannot be reoslved,
 /// the original value will be returned.
 /// </summary>
 public static string ResolveValueReference(this EavValue value)
 {
     if (value.IsHyperlink())
     {
         return(ResolveHyperlink(value));
     }
     return(value.Value);
 }