public ValidationResult Merge(ValidationResult other)
 {
     return new ValidationResult(ValidationErrors.Union(other.ValidationErrors));
 }
 public ValidationException(ValidationResult validationResult)
     : base(validationResult.ErrorMessage)
 {
     ValidationResult = validationResult;
 }
 public DtoValidationException(ValidationResult validationResult)
     : base(validationResult.Message)
 {
     ValidationResult = validationResult;
 }