from static method
Returns an instance for tag, or null when the tag does not answer to NfcA.
Implementation
static NfcA? from(NfcTag tag) {
final data = tag.data.nfcA;
if (data == null) return null;
return NfcA._(
tag.data.handle,
atqa: data.atqa,
sak: data.sak,
maxTransceiveLength: data.maxTransceiveLength,
timeout: Duration(milliseconds: data.timeout),
);
}