toOid method
Implementation
String toOid() {
var buf = StringBuffer();
for (var i = 0; i < _bytes.length; i++) {
var s = _bytes[i].toRadixString(16).padLeft(2, '0');
buf.write(s);
if (buf.length >= 7) {
break;
}
}
return buf.toString().substring(0, 7);
}