value property

Optional component name

Example:

@Component('customValidator')
class CustomValidator implements Validator<String> {
  @override
  List<ValidationError> validate(String value, String fieldName) {
    final errors = <ValidationError>[];
    
    if (value.contains('forbidden')) {
      errors.add(ValidationError(
        field: fieldName,
        message: 'Value contains forbidden content',
        rejectedValue: value,
        validationType: 'CustomValidator',
      ));
    }
    
    return errors;
  }
  
  @override
  bool supports(Type type) => type == String;
}