/// <summary>
 /// Gets the metadata object for the root object being validated.
 /// </summary>
 /// <param name="mvContext">MVC Validation context</param>
 /// <returns>Metadata instance.</returns>
 protected static ModelMetadata GetRootMetadata(ModelValidationContext mvContext)
 {
     return(MvcValidationHelper.GetRootMetadata(mvContext));
 }