anchor.diff:          test(testCase.key, () {
             var nodeId = <int>[0x9E, 0x6B, 0xDE, 0xCE, 0xD8, 0x46];
             var clockSeq = (0xB3 << 8 | 0xC8) & 0x3ffff;
  -          final uuid =
  -              Uuid().v6(options: {'mSecs': testCase.value[0], 'nSecs': 0, 'node': nodeId, 'clockSeq': clockSeq});
  +          final uuid = Uuid().v6(options: {
  +            'mSecs': testCase.value[0],
  +            'nSecs': 0,
  +            'node': nodeId,
  +            'clockSeq': clockSeq
  +          });
             expect(uuid.toUpperCase(), equals(testCase.value[1]));
           });
         }
  
positive.code: 
      test('Return same output as entered for "random" option', () {
        var u0 = uuid.v4(options: {
          'random': [0x10, 0x91, 0x56, 0xbe, 0xc4, 0xfb, 0xc1, 0xea, 0x71, 0xb4, 0xef, 0xe1, 0x67, 0x1c, 0x58, 0x36]
        });
        var u1 = '109156be-c4fb-41ea-b1b4-efe1671c5836';
        expect(u0, equals(u1));
  
negative.code:       var uidt = uuid.v1(options: {'mSecs': testTime, 'nSecs': 10});
        var uidtb = uuid.v1(options: {'mSecs': testTime, 'nSecs': 9});
  
        expect(
            (int.parse("0x${uidtb.split('-')[3]}") -
                int.parse("0x${uidt.split('-')[3]}")),
            equals(1));
      });
  
      test('Explicit options produce expected id', () {
  