diff --git a/client/src/main/java/com/vesoft/nebula/client/storage/StorageClient.java b/client/src/main/java/com/vesoft/nebula/client/storage/StorageClient.java
index db36a1dc6..888dadaae 100644
--- a/client/src/main/java/com/vesoft/nebula/client/storage/StorageClient.java
+++ b/client/src/main/java/com/vesoft/nebula/client/storage/StorageClient.java
@@ -51,6 +51,7 @@ public class StorageClient implements Serializable {
     private boolean enableSSL = false;
     private SSLParam sslParam = null;
 
+
     private String user = null;
     private String password = null;
 
@@ -58,6 +59,7 @@ public class StorageClient implements Serializable {
 
     // the write list for users with read permission
     private Map<String, List<String>> spaceLabelWriteList = null;
+
     private String version = null;
 
     /**
@@ -129,6 +131,7 @@ public void setGraphAddress(String graphAddress) {
         this.graphAddress = graphAddress;
     }
 
+
     public StorageClient setVersion(String version) {
         this.version = version;
         return this;
diff --git a/client/src/test/java/com/vesoft/nebula/client/storage/StorageClientTest.java b/client/src/test/java/com/vesoft/nebula/client/storage/StorageClientTest.java
index 51913838c..f6fec5f65 100644
--- a/client/src/test/java/com/vesoft/nebula/client/storage/StorageClientTest.java
+++ b/client/src/test/java/com/vesoft/nebula/client/storage/StorageClientTest.java
@@ -60,6 +60,7 @@ public void testStorageClientWithVersionInWhiteList() {
         List<HostAddress> address = Arrays.asList(new HostAddress(ip, 9559));
         StorageClient storageClient = new StorageClient(address);
         try {
+
             storageClient.setGraphAddress("127.0.0.1:9669");
             storageClient.setUser("root");
             storageClient.setPassword("nebula");