Document type, either fully-qualified (ES_DNI, ES_NIE, ES_NIF_PJ, ES_NUSS, ES_PASAPORTE) or short (DNI, NIE, NIF_PJ, CIF, NUSS, PASAPORTE).
Raw document string (formatting tolerated).
true if the value passes ES-specific validation rules.
Validate a Spanish (ES) identity, tax or social-security document.