split import packages

filter/impl/generic_service_filter.go

 package impl
 
+import (
+	"reflect"
+	"strings"
+)
+
 import (
 	hessian "github.com/apache/dubbo-go-hessian2"
 	"github.com/mitchellh/mapstructure"
 	perrors "github.com/pkg/errors"
-	"reflect"
-	"strings"
 )
 
 import (

filter/impl/generic_service_filter_test.go

@@ -3,12 +3,15 @@ package impl
 import (
 	"context"
 	"errors"
-	hessian "github.com/apache/dubbo-go-hessian2"
-	"github.com/stretchr/testify/assert"
 	"reflect"
 	"testing"
 )
 
+import (
+	hessian "github.com/apache/dubbo-go-hessian2"
+	"github.com/stretchr/testify/assert"
+)
+
 import (
 	"github.com/apache/dubbo-go/common"
 	"github.com/apache/dubbo-go/common/proxy/proxy_factory"