diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/BaseQueryWrapper.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/BaseQueryWrapper.java
index 694431fe..72739f7b 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/BaseQueryWrapper.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/BaseQueryWrapper.java
@@ -275,11 +275,11 @@ public class BaseQueryWrapper<T extends BaseQueryWrapper<T>> implements CloneSup
             clone.havingQueryCondition = ObjectUtil.clone(this.havingQueryCondition);
             clone.orderBys = CollectionUtil.cloneArrayList(this.orderBys);
             clone.unions = CollectionUtil.cloneArrayList(this.unions);
-
+            // copy List if necessary ...
             if (this.endFragments != null){
                 clone.endFragments = CollectionUtil.newArrayList(this.endFragments);
             }
-
+            // copy Map if necessary ...
             if (this.context != null){
                 clone.context = CollectionUtil.newHashMap(this.context);
             }
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/util/ObjectUtil.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/util/ObjectUtil.java
index f3380201..dab98e22 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/util/ObjectUtil.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/util/ObjectUtil.java
@@ -24,6 +24,7 @@ public class ObjectUtil {
     private ObjectUtil() {}
 
     public static Object cloneObject(Object value) {
+        // ROLE.ROLE_ID.ge(USER.USER_ID)
         if (value instanceof CloneSupport) {
             return ((CloneSupport<?>) value).clone();
         }