validate method

Implementation

@override
void validate(String? newValue) {
  final String? _newValue = newValue;

  if (_newValue == null || _newValue.isEmpty) {
    if (isRequired) {
      throw RequiredValueException();
    }else{
      return;
    }
  }

  final bool isValid = CPFValidator.isValid(_newValue);

  if (isValid == false) {
    throw InvalidValueException();
  }
}