diff --git a/lib/src/tags_impl.dart b/lib/src/tags_impl.dart
index 1de9e59..4708b3b 100644
--- a/lib/src/tags_impl.dart
+++ b/lib/src/tags_impl.dart
@@ -5,7 +5,7 @@ import 'package:tekartik_common_utils/string_utils.dart';
 /// Tags are a list or trimmed string.
 abstract class Tags {
   /// Tags from a list of strings.
-  factory Tags.fromList({List<String>? tags}) {
+  factory Tags.fromList(List<String>? tags) {
     return _Tags(tags);
   }
 
@@ -84,14 +84,6 @@ abstract class TagsCondition {
   /// Private
   String _toInnerText();
 
-  /// Private
-  factory TagsCondition._any(List<TagsCondition> conditions) {
-    assert(conditions.isNotEmpty);
-    if (conditions.length == 1) {
-      return conditions.first;
-    }
-    return _TagsConditionAny(conditions);
-  }
   factory TagsCondition._or(
       TagsCondition condition1, TagsCondition condition2) {
     if (condition2 is _TagsConditionAny) {
@@ -105,15 +97,6 @@ abstract class TagsCondition {
     }
     return _TagsConditionAny([condition1, condition2]);
   }
-
-  factory TagsCondition._all(List<TagsCondition> conditions) {
-    assert(conditions.isNotEmpty);
-    if (conditions.length == 1) {
-      return conditions.first;
-    }
-    return _TagsConditionAll(conditions);
-  }
-
   factory TagsCondition._and(
       TagsCondition condition1, TagsCondition condition2) {
     if (condition2 is _TagsConditionAll) {
diff --git a/test/tags_test.dart b/test/tags_test.dart
index 5f3981b..2030cbd 100644
--- a/test/tags_test.dart
+++ b/test/tags_test.dart
@@ -4,17 +4,27 @@ import 'package:tekartik_common_utils/src/tags_impl.dart'
 import 'package:tekartik_common_utils/tags.dart';
 import 'package:test/test.dart' hide Tags;
 
-Tags _t(String text) => Tags.fromText(text);
+Tags _t(String? text) => Tags.fromText(text);
 
 TagsCondition _c(String expression) => TagsCondition(expression);
 
 Future<void> main() async {
   group('tags', () {
     test('tags', () {
+      expect(_t(null).toText(), '');
+      expect(_t(null).toTextOrNull(), isNull);
+      expect(_t(null).toList(), <String>[]);
+      expect(_t(null).toListOrNull(), isNull);
       expect(_t('test').toText(), 'test');
       expect(_t(' test ').toText(), 'test');
-      expect(_t('test1, test2').toText(), 'test1,test2');
-      expect(_t(' test1, test2 ').toText(), 'test1,test2');
+      var tags = _t('test1, test2');
+      expect(tags.toText(), 'test1,test2');
+      expect(tags.toTextOrNull(), 'test1,test2');
+      expect(tags.toList(), ['test1', 'test2']);
+      expect(tags.toListOrNull(), ['test1', 'test2']);
+      expect(Tags.fromList(null).toText(), '');
+      expect(Tags.fromList(['test1']).toText(), 'test1');
+      expect(Tags.fromList(['test1', 'test2']).toText(), 'test1,test2');
     });
     test('simple', () {
       var tags = _t('test');