anchor.diff:                t['name'] == null ? '[998, 999] => ${t['b']}' : t['name'];
   
             testFn(name, () {
  -            final b = ee(0, gen(t['b']));
  +            final b = ee(0, gen(t['b'], false));
               checkInnerHtmlEquals(a, b);
             });
           }
  
positive.code:     group('Null children', () {
        test('Add item', () {
          final a = ee(0, null);
          final b = ee(0, gen([1]));
          checkInnerHtmlEquals(a, b);
        });
  
        test('Add two items', () {
          final a = ee(0, null);
          final b = ee(0, gen([1, 2]));
          checkInnerHtmlEquals(a, b);
        });
  
        test('Remove item', () {
          final a = ee(0, gen([1]));
          final b = ee(0, null);
          checkInnerHtmlEquals(a, b);
        });
  
        test('Remove two items', () {
          final a = ee(0, gen([1, 2]));
          final b = ee(0, null);
          checkInnerHtmlEquals(a, b);
        });
  
negative.code:           final name = t['name'] == null ? '[999] => ${t['b']}' : t['name'];
  
            testFn(name, () {
              final b = ee(0, gen(t['b'], false));
  
              checkInnerHtmlEquals(a, b);
            });
  