Suggested IModelValidationResult for Nancy

Nancy_IModelValidationSummary.cs

public interface IModelValidationResult
{
    public IEnumerable<ModelValidationError> ModelErrors { get; set; }
        // one error per pair/group of properties -> show ModelErrorMesssage in error summary list
        
    public IDictionary<string, ModelValidationError> PropertyErrors { get; set; }
        // on error per property -> turn property red and show PropertyErrorMessage next to property
        // note: would include only the *first* error encountered for each property
        
    public IDictionary<string, IList<ModelValidationError>> GroupedPropertyErrors { get; set; }
        // one or more errors for each property -> turn property red and show PropertyErrorMessages list below/next to property
}