/// <summary>
/// Gets <see cref="ValidationMessageOptions"/> attached to <paramref name="validationRule"/>.
/// </summary>
/// <param name="validationRule">Validation rule to customize.</param>
/// <returns><see cref="ValidationMessageOptions"/>.</returns>
public static ValidationMessageOptions GetValidationMessageOptions(this IValidationRule validationRule)
{
return(validationRule.GetMetadata <ValidationMessageOptions>(defaultValue: ValidationMessageOptions.Default) !);
}
