diff --git a/common/yaml/yaml_test.go b/common/yaml/yaml_test.go
index 8d0eefddc2..994e1595c4 100644
--- a/common/yaml/yaml_test.go
+++ b/common/yaml/yaml_test.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package yaml
 
 import (
diff --git a/config/rest/config_reader/reader_impl/default_config_reader.go b/config/rest/config_reader/reader_impl/default_config_reader.go
index 40e1ecf9a0..89cf247483 100644
--- a/config/rest/config_reader/reader_impl/default_config_reader.go
+++ b/config/rest/config_reader/reader_impl/default_config_reader.go
@@ -18,8 +18,6 @@
 package reader_impl
 
 import (
-	"github.com/apache/dubbo-go/config/rest"
-	"github.com/apache/dubbo-go/config/rest/config_reader"
 	"os"
 )
 
@@ -31,6 +29,8 @@ import (
 	"github.com/apache/dubbo-go/common/constant"
 	"github.com/apache/dubbo-go/common/extension"
 	"github.com/apache/dubbo-go/common/yaml"
+	"github.com/apache/dubbo-go/config/rest"
+	"github.com/apache/dubbo-go/config/rest/config_reader"
 )
 
 var (
diff --git a/protocol/rest/client/client_impl/resty_client.go b/protocol/rest/client/client_impl/resty_client.go
index 839936695d..aa6c23137d 100644
--- a/protocol/rest/client/client_impl/resty_client.go
+++ b/protocol/rest/client/client_impl/resty_client.go
@@ -37,14 +37,14 @@ import (
 )
 
 func init() {
-	extension.SetRestClient(constant.DEFAULT_REST_CLIENT, GetRestyClient)
+	extension.SetRestClient(constant.DEFAULT_REST_CLIENT, NewRestyClient)
 }
 
 type RestyClient struct {
 	client *resty.Client
 }
 
-func NewRestyClient(restOption *client.RestOptions) *RestyClient {
+func NewRestyClient(restOption *client.RestOptions) client.RestClient {
 	client := resty.New()
 	client.SetTransport(
 		&http.Transport{
@@ -83,7 +83,3 @@ func (rc *RestyClient) Do(restRequest *client.RestRequest, res interface{}) erro
 	}
 	return nil
 }
-
-func GetRestyClient(restOptions *client.RestOptions) client.RestClient {
-	return NewRestyClient(restOptions)
-}
diff --git a/protocol/rest/rest_invoker_test.go b/protocol/rest/rest_invoker_test.go
index b6eaa17334..75dd762c68 100644
--- a/protocol/rest/rest_invoker_test.go
+++ b/protocol/rest/rest_invoker_test.go
@@ -148,7 +148,7 @@ func TestRestInvoker_Invoke(t *testing.T) {
 	configMap["com.ikurento.user.UserProvider"] = &rest.RestServiceConfig{
 		RestMethodConfigsMap: methodConfigMap,
 	}
-	restClient := client_impl.GetRestyClient(&client.RestOptions{ConnectTimeout: 3 * time.Second, RequestTimeout: 3 * time.Second})
+	restClient := client_impl.NewRestyClient(&client.RestOptions{ConnectTimeout: 3 * time.Second, RequestTimeout: 3 * time.Second})
 	invoker := NewRestInvoker(url, &restClient, methodConfigMap)
 	user := &User{}
 	inv := invocation.NewRPCInvocationWithOptions(invocation.WithMethodName("GetUser"),