anchor.diff:          'offset 16 bytes before the end': size - 16,
         }.entries) {
           test(testCase.key, () {
  -          final v = Uuid.parse(Uuid.NAMESPACE_OID, buffer: buffer, offset: testCase.value);
  -
  -          expect(Uuid.unparse(v, offset: testCase.value), equals(Uuid.NAMESPACE_OID));
  +          final v = Uuid.parse(Uuid.NAMESPACE_OID,
  +              buffer: buffer, offset: testCase.value);
  +
  +          expect(Uuid.unparse(v, offset: testCase.value),
  +              equals(Uuid.NAMESPACE_OID));
           });
         }
       });
  
positive.code:       var isValidDefault = Uuid.isValidUUID(fromString: guidString);
        expect(isValidDefault, false);
  
        var isValidRFC = Uuid.isValidUUID(fromString: guidString, validationMode: ValidationMode.strictRFC4122);
        expect(isValidRFC, false);
  
        var isValidNonStrict = Uuid.isValidUUID(fromString: guidString, validationMode: ValidationMode.nonStrict);
        expect(isValidNonStrict, true);
      });
    });
  
negative.code:       expect(uuids.length, equals(10000000));
      });
  
      test(
          'Generate lots of codes to check we don\'t generate variant 2 V6 codes.',
          () {
        for (var i = 0; i < 10000; i++) {
          var code = Uuid().v6();
          expect(code[19], isNot(equals('d')));
  