diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000000000000000000000000000000000000..e0e593879f86360ccac14511e1d2e0cd85c1b99f
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "string": "cpp"
+    }
+}
\ No newline at end of file
diff --git a/previewer/mock/accesstoken_kit.h b/previewer/mock/accesstoken_kit.h
index ec09282198e5b5ff22aafdbb56ad28aa79ffa947..043e535e193e655294e0d4c6f4c34c81e88ade36 100644
--- a/previewer/mock/accesstoken_kit.h
+++ b/previewer/mock/accesstoken_kit.h
@@ -12,7 +12,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+liubo
+liubo1
+liubo2
 #ifndef INTERFACES_INNER_KITS_ACCESSTOKEN_KIT_H
 #define INTERFACES_INNER_KITS_ACCESSTOKEN_KIT_H