diff --git a/casdoorsdk/email.go b/casdoorsdk/email.go
index 0df5af3..f8f8841 100644
--- a/casdoorsdk/email.go
+++ b/casdoorsdk/email.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -49,7 +49,3 @@ func (c *Client) SendEmail(title string, content string, sender string, receiver
 
 	return nil
 }
-
-func SendEmail(title string, content string, sender string, receivers ...string) error {
-	return globalClient.SendEmail(title, content, sender, receivers...)
-}
diff --git a/casdoorsdk/email_global.go b/casdoorsdk/email_global.go
new file mode 100644
index 0000000..c5f0cad
--- /dev/null
+++ b/casdoorsdk/email_global.go
@@ -0,0 +1,19 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+func SendEmail(title string, content string, sender string, receivers ...string) error {
+	return globalClient.SendEmail(title, content, sender, receivers...)
+}
diff --git a/casdoorsdk/enfocer.go b/casdoorsdk/enfocer.go
index db00b8e..8a3c161 100644
--- a/casdoorsdk/enfocer.go
+++ b/casdoorsdk/enfocer.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
 
 import (
diff --git a/casdoorsdk/enforcer_global.go b/casdoorsdk/enforcer_global.go
index 87019f0..7d9b900 100644
--- a/casdoorsdk/enforcer_global.go
+++ b/casdoorsdk/enforcer_global.go
@@ -1,3 +1,17 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
 
 func GetEnforcers() ([]*Enforcer, error) {
diff --git a/casdoorsdk/jwt.go b/casdoorsdk/jwt.go
index 11496d7..ab321ca 100644
--- a/casdoorsdk/jwt.go
+++ b/casdoorsdk/jwt.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -48,7 +48,3 @@ func (c *Client) ParseJwtToken(token string) (*Claims, error) {
 
 	return nil, err
 }
-
-func ParseJwtToken(token string) (*Claims, error) {
-	return globalClient.ParseJwtToken(token)
-}
diff --git a/casdoorsdk/jwt_global.go b/casdoorsdk/jwt_global.go
new file mode 100644
index 0000000..5cc47a1
--- /dev/null
+++ b/casdoorsdk/jwt_global.go
@@ -0,0 +1,19 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+func ParseJwtToken(token string) (*Claims, error) {
+	return globalClient.ParseJwtToken(token)
+}
diff --git a/casdoorsdk/organization.go b/casdoorsdk/organization.go
index cc1be15..e16ca73 100644
--- a/casdoorsdk/organization.go
+++ b/casdoorsdk/organization.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -86,10 +86,6 @@ func (c *Client) GetOrganization(name string) (*Organization, error) {
 	return organization, nil
 }
 
-func GetOrganization(name string) ([]*Organization, error) {
-	return globalClient.GetOrganizations()
-}
-
 func (c *Client) GetOrganizations() ([]*Organization, error) {
 	queryMap := map[string]string{
 		"owner": c.OrganizationName,
@@ -110,10 +106,6 @@ func (c *Client) GetOrganizations() ([]*Organization, error) {
 	return organizations, nil
 }
 
-func GetOrganizations() ([]*Organization, error) {
-	return globalClient.GetOrganizations()
-}
-
 func (c *Client) GetOrganizationNames() ([]*Organization, error) {
 	queryMap := map[string]string{
 		"owner": c.OrganizationName,
@@ -134,10 +126,6 @@ func (c *Client) GetOrganizationNames() ([]*Organization, error) {
 	return organizationNames, nil
 }
 
-func GetOrganizationNames() ([]*Organization, error) {
-	return globalClient.GetOrganizationNames()
-}
-
 func (c *Client) AddOrganization(organization *Organization) (bool, error) {
 	if organization.Owner == "" {
 		organization.Owner = "admin"
@@ -146,10 +134,6 @@ func (c *Client) AddOrganization(organization *Organization) (bool, error) {
 	return affected, err
 }
 
-func AddOrganization(organization *Organization) (bool, error) {
-	return globalClient.AddOrganization(organization)
-}
-
 func (c *Client) DeleteOrganization(name string) (bool, error) {
 	organization := Organization{
 		Owner: "admin",
@@ -160,15 +144,7 @@ func (c *Client) DeleteOrganization(name string) (bool, error) {
 	return affected, err
 }
 
-func DeleteOrganization(name string) (bool, error) {
-	return globalClient.DeleteOrganization(name)
-}
-
 func (c *Client) UpdateOrganization(organization *Organization) (bool, error) {
 	_, affected, err := c.modifyOrganization("update-organization", organization, nil)
 	return affected, err
 }
-
-func UpdateOrganization(organization *Organization) (bool, error) {
-	return globalClient.UpdateOrganization(organization)
-}
diff --git a/casdoorsdk/organization_global.go b/casdoorsdk/organization_global.go
new file mode 100644
index 0000000..dd6e4a5
--- /dev/null
+++ b/casdoorsdk/organization_global.go
@@ -0,0 +1,39 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+func GetOrganization(name string) ([]*Organization, error) {
+	return globalClient.GetOrganizations()
+}
+
+func GetOrganizations() ([]*Organization, error) {
+	return globalClient.GetOrganizations()
+}
+
+func GetOrganizationNames() ([]*Organization, error) {
+	return globalClient.GetOrganizationNames()
+}
+
+func AddOrganization(organization *Organization) (bool, error) {
+	return globalClient.AddOrganization(organization)
+}
+
+func DeleteOrganization(name string) (bool, error) {
+	return globalClient.DeleteOrganization(name)
+}
+
+func UpdateOrganization(organization *Organization) (bool, error) {
+	return globalClient.UpdateOrganization(organization)
+}
diff --git a/casdoorsdk/resource.go b/casdoorsdk/resource.go
index a62a18e..7e05e3a 100644
--- a/casdoorsdk/resource.go
+++ b/casdoorsdk/resource.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -61,18 +61,10 @@ func (c *Client) GetResource(id string) (*Resource, error) {
 	return resource, nil
 }
 
-func GetResource(id string) (*Resource, error) {
-	return globalClient.GetResource(id)
-}
-
 func (c *Client) GetResourceEx(owner, name string) (*Resource, error) {
 	return c.GetResource(fmt.Sprintf("%s/%s", owner, name))
 }
 
-func GetResourceEx(owner, name string) (*Resource, error) {
-	return globalClient.GetResourceEx(owner, name)
-}
-
 func (c *Client) GetResources(owner, user, field, value, sortField, sortOrder string) ([]*Resource, error) {
 	queryMap := map[string]string{
 		"owner":     owner,
@@ -98,10 +90,6 @@ func (c *Client) GetResources(owner, user, field, value, sortField, sortOrder st
 	return resources, nil
 }
 
-func GetResources(owner, user, field, value, sortField, sortOrder string) ([]*Resource, error) {
-	return globalClient.GetResources(owner, user, field, value, sortField, sortOrder)
-}
-
 func (c *Client) GetPaginationResources(owner, user, field, value string, pageSize, page int, sortField, sortOrder string) ([]*Resource, error) {
 	queryMap := map[string]string{
 		"owner":     owner,
@@ -129,10 +117,6 @@ func (c *Client) GetPaginationResources(owner, user, field, value string, pageSi
 	return resources, nil
 }
 
-func GetPaginationResources(owner, user, field, value string, pageSize, page int, sortField, sortOrder string) ([]*Resource, error) {
-	return globalClient.GetPaginationResources(owner, user, field, value, pageSize, page, sortField, sortOrder)
-}
-
 func (c *Client) UploadResource(user string, tag string, parent string, fullFilePath string, fileBytes []byte) (string, string, error) {
 	queryMap := map[string]string{
 		"owner":        c.OrganizationName,
@@ -157,10 +141,6 @@ func (c *Client) UploadResource(user string, tag string, parent string, fullFile
 	return fileUrl, name, nil
 }
 
-func UploadResource(user string, tag string, parent string, fullFilePath string, fileBytes []byte) (string, string, error) {
-	return globalClient.UploadResource(user, tag, parent, fullFilePath, fileBytes)
-}
-
 func (c *Client) UploadResourceEx(user string, tag string, parent string, fullFilePath string, fileBytes []byte, createdTime string, description string) (string, string, error) {
 	queryMap := map[string]string{
 		"owner":        c.OrganizationName,
@@ -187,10 +167,6 @@ func (c *Client) UploadResourceEx(user string, tag string, parent string, fullFi
 	return fileUrl, name, nil
 }
 
-func UploadResourceEx(user string, tag string, parent string, fullFilePath string, fileBytes []byte, createdTime string, description string) (string, string, error) {
-	return globalClient.UploadResourceEx(user, tag, parent, fullFilePath, fileBytes, createdTime, description)
-}
-
 func (c *Client) DeleteResource(name string) (bool, error) {
 	resource := Resource{
 		Owner: c.OrganizationName,
@@ -208,7 +184,3 @@ func (c *Client) DeleteResource(name string) (bool, error) {
 
 	return resp.Data == "Affected", nil
 }
-
-func DeleteResource(name string) (bool, error) {
-	return globalClient.DeleteResource(name)
-}
diff --git a/casdoorsdk/resource_global.go b/casdoorsdk/resource_global.go
new file mode 100644
index 0000000..272661d
--- /dev/null
+++ b/casdoorsdk/resource_global.go
@@ -0,0 +1,43 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+func GetResource(id string) (*Resource, error) {
+	return globalClient.GetResource(id)
+}
+
+func GetResourceEx(owner, name string) (*Resource, error) {
+	return globalClient.GetResourceEx(owner, name)
+}
+
+func GetResources(owner, user, field, value, sortField, sortOrder string) ([]*Resource, error) {
+	return globalClient.GetResources(owner, user, field, value, sortField, sortOrder)
+}
+
+func GetPaginationResources(owner, user, field, value string, pageSize, page int, sortField, sortOrder string) ([]*Resource, error) {
+	return globalClient.GetPaginationResources(owner, user, field, value, pageSize, page, sortField, sortOrder)
+}
+
+func UploadResource(user string, tag string, parent string, fullFilePath string, fileBytes []byte) (string, string, error) {
+	return globalClient.UploadResource(user, tag, parent, fullFilePath, fileBytes)
+}
+
+func UploadResourceEx(user string, tag string, parent string, fullFilePath string, fileBytes []byte, createdTime string, description string) (string, string, error) {
+	return globalClient.UploadResourceEx(user, tag, parent, fullFilePath, fileBytes, createdTime, description)
+}
+
+func DeleteResource(name string) (bool, error) {
+	return globalClient.DeleteResource(name)
+}
diff --git a/casdoorsdk/role.go b/casdoorsdk/role.go
index 5a80d40..487287e 100644
--- a/casdoorsdk/role.go
+++ b/casdoorsdk/role.go
@@ -1,4 +1,4 @@
-// Copyright 2022 The Casdoor Authors. All Rights Reserved.
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -55,10 +55,6 @@ func (c *Client) GetRoles() ([]*Role, error) {
 	return roles, nil
 }
 
-func GetRoles() ([]*Role, error) {
-	return globalClient.GetRoles()
-}
-
 func (c *Client) GetPaginationRoles(p int, pageSize int, queryMap map[string]string) ([]*Role, int, error) {
 	queryMap["owner"] = c.OrganizationName
 	queryMap["p"] = strconv.Itoa(p)
@@ -78,10 +74,6 @@ func (c *Client) GetPaginationRoles(p int, pageSize int, queryMap map[string]str
 	return roles, int(response.Data2.(float64)), nil
 }
 
-func GetPaginationRoles(p int, pageSize int, queryMap map[string]string) ([]*Role, int, error) {
-	return globalClient.GetPaginationRoles(p, pageSize, queryMap)
-}
-
 func (c *Client) GetRole(name string) (*Role, error) {
 	queryMap := map[string]string{
 		"id": fmt.Sprintf("%s/%s", c.OrganizationName, name),
@@ -102,42 +94,22 @@ func (c *Client) GetRole(name string) (*Role, error) {
 	return role, nil
 }
 
-func GetRole(name string) (*Role, error) {
-	return globalClient.GetRole(name)
-}
-
 func (c *Client) UpdateRole(role *Role) (bool, error) {
 	_, affected, err := c.modifyRole("update-role", role, nil)
 	return affected, err
 }
 
-func UpdateRole(role *Role) (bool, error) {
-	return globalClient.UpdateRole(role)
-}
-
 func (c *Client) UpdateRoleForColumns(role *Role, columns []string) (bool, error) {
 	_, affected, err := c.modifyRole("update-role", role, columns)
 	return affected, err
 }
 
-func UpdateRoleForColumns(role *Role, columns []string) (bool, error) {
-	return globalClient.UpdateRoleForColumns(role, columns)
-}
-
 func (c *Client) AddRole(role *Role) (bool, error) {
 	_, affected, err := c.modifyRole("add-role", role, nil)
 	return affected, err
 }
 
-func AddRole(role *Role) (bool, error) {
-	return globalClient.AddRole(role)
-}
-
 func (c *Client) DeleteRole(role *Role) (bool, error) {
 	_, affected, err := c.modifyRole("delete-role", role, nil)
 	return affected, err
 }
-
-func DeleteRole(role *Role) (bool, error) {
-	return globalClient.DeleteRole(role)
-}
diff --git a/casdoorsdk/role_global.go b/casdoorsdk/role_global.go
new file mode 100644
index 0000000..ff799d2
--- /dev/null
+++ b/casdoorsdk/role_global.go
@@ -0,0 +1,43 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+func GetRoles() ([]*Role, error) {
+	return globalClient.GetRoles()
+}
+
+func GetPaginationRoles(p int, pageSize int, queryMap map[string]string) ([]*Role, int, error) {
+	return globalClient.GetPaginationRoles(p, pageSize, queryMap)
+}
+
+func GetRole(name string) (*Role, error) {
+	return globalClient.GetRole(name)
+}
+
+func UpdateRole(role *Role) (bool, error) {
+	return globalClient.UpdateRole(role)
+}
+
+func UpdateRoleForColumns(role *Role, columns []string) (bool, error) {
+	return globalClient.UpdateRoleForColumns(role, columns)
+}
+
+func AddRole(role *Role) (bool, error) {
+	return globalClient.AddRole(role)
+}
+
+func DeleteRole(role *Role) (bool, error) {
+	return globalClient.DeleteRole(role)
+}
diff --git a/casdoorsdk/session.go b/casdoorsdk/session.go
index 3a534ef..5cdcd13 100644
--- a/casdoorsdk/session.go
+++ b/casdoorsdk/session.go
@@ -55,10 +55,6 @@ func (c *Client) GetSessions() ([]*Session, error) {
 	return sessions, nil
 }
 
-func GetSessions() ([]*Session, error) {
-	return globalClient.GetSessions()
-}
-
 func (c *Client) GetPaginationSessions(p int, pageSize int, queryMap map[string]string) ([]*Session, int, error) {
 	queryMap["owner"] = c.OrganizationName
 	queryMap["p"] = strconv.Itoa(p)
@@ -78,10 +74,6 @@ func (c *Client) GetPaginationSessions(p int, pageSize int, queryMap map[string]
 	return sessions, int(response.Data2.(float64)), nil
 }
 
-func GetPaginationSessions(p int, pageSize int, queryMap map[string]string) ([]*Session, int, error) {
-	return globalClient.GetPaginationSessions(p, pageSize, queryMap)
-}
-
 func (c *Client) GetSession(name string) (*Session, error) {
 	queryMap := map[string]string{
 		"id": fmt.Sprintf("%s/%s", c.OrganizationName, name),
@@ -102,42 +94,22 @@ func (c *Client) GetSession(name string) (*Session, error) {
 	return session, nil
 }
 
-func GetSession(name string) (*Session, error) {
-	return globalClient.GetSession(name)
-}
-
 func (c *Client) UpdateSession(session *Session) (bool, error) {
 	_, affected, err := c.modifySession("update-session", session, nil)
 	return affected, err
 }
 
-func UpdateSession(session *Session) (bool, error) {
-	return globalClient.UpdateSession(session)
-}
-
 func (c *Client) UpdateSessionForColumns(session *Session, columns []string) (bool, error) {
 	_, affected, err := c.modifySession("update-session", session, columns)
 	return affected, err
 }
 
-func UpdateSessionForColumns(session *Session, columns []string) (bool, error) {
-	return globalClient.UpdateSessionForColumns(session, columns)
-}
-
 func (c *Client) AddSession(session *Session) (bool, error) {
 	_, affected, err := c.modifySession("add-session", session, nil)
 	return affected, err
 }
 
-func AddSession(session *Session) (bool, error) {
-	return globalClient.AddSession(session)
-}
-
 func (c *Client) DeleteSession(session *Session) (bool, error) {
 	_, affected, err := c.modifySession("delete-session", session, nil)
 	return affected, err
 }
-
-func DeleteSession(session *Session) (bool, error) {
-	return globalClient.DeleteSession(session)
-}
diff --git a/casdoorsdk/session_global.go b/casdoorsdk/session_global.go
new file mode 100644
index 0000000..e0d2e0f
--- /dev/null
+++ b/casdoorsdk/session_global.go
@@ -0,0 +1,43 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 records and
+// limitations under the License.
+
+package casdoorsdk
+
+func GetSessions() ([]*Session, error) {
+	return globalClient.GetSessions()
+}
+
+func GetPaginationSessions(p int, pageSize int, queryMap map[string]string) ([]*Session, int, error) {
+	return globalClient.GetPaginationSessions(p, pageSize, queryMap)
+}
+
+func GetSession(name string) (*Session, error) {
+	return globalClient.GetSession(name)
+}
+
+func UpdateSession(session *Session) (bool, error) {
+	return globalClient.UpdateSession(session)
+}
+
+func UpdateSessionForColumns(session *Session, columns []string) (bool, error) {
+	return globalClient.UpdateSessionForColumns(session, columns)
+}
+
+func AddSession(session *Session) (bool, error) {
+	return globalClient.AddSession(session)
+}
+
+func DeleteSession(session *Session) (bool, error) {
+	return globalClient.DeleteSession(session)
+}
diff --git a/casdoorsdk/sms.go b/casdoorsdk/sms.go
index 9293260..435034c 100644
--- a/casdoorsdk/sms.go
+++ b/casdoorsdk/sms.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -14,38 +14,6 @@
 
 package casdoorsdk
 
-import (
-	"encoding/json"
-	"fmt"
-)
-
-type smsForm struct {
-	Content   string   `json:"content"`
-	Receivers []string `json:"receivers"`
-}
-
-func (c *Client) SendSms(content string, receivers ...string) error {
-	form := smsForm{
-		Content:   content,
-		Receivers: receivers,
-	}
-	postBytes, err := json.Marshal(form)
-	if err != nil {
-		return err
-	}
-
-	resp, err := c.DoPost("send-sms", nil, postBytes, false, false)
-	if err != nil {
-		return err
-	}
-
-	if resp.Status != "ok" {
-		return fmt.Errorf(resp.Msg)
-	}
-
-	return nil
-}
-
 func SendSms(content string, receivers ...string) error {
 	return globalClient.SendSms(content, receivers...)
 }
diff --git a/casdoorsdk/sms_global.go b/casdoorsdk/sms_global.go
new file mode 100644
index 0000000..8d837cc
--- /dev/null
+++ b/casdoorsdk/sms_global.go
@@ -0,0 +1,47 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type smsForm struct {
+	Content   string   `json:"content"`
+	Receivers []string `json:"receivers"`
+}
+
+func (c *Client) SendSms(content string, receivers ...string) error {
+	form := smsForm{
+		Content:   content,
+		Receivers: receivers,
+	}
+	postBytes, err := json.Marshal(form)
+	if err != nil {
+		return err
+	}
+
+	resp, err := c.DoPost("send-sms", nil, postBytes, false, false)
+	if err != nil {
+		return err
+	}
+
+	if resp.Status != "ok" {
+		return fmt.Errorf(resp.Msg)
+	}
+
+	return nil
+}
diff --git a/casdoorsdk/token.go b/casdoorsdk/token.go
index ea0e015..1dac238 100644
--- a/casdoorsdk/token.go
+++ b/casdoorsdk/token.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -72,10 +72,6 @@ func (c *Client) GetOAuthToken(code string, state string) (*oauth2.Token, error)
 	return token, err
 }
 
-func GetOAuthToken(code string, state string) (*oauth2.Token, error) {
-	return globalClient.GetOAuthToken(code, state)
-}
-
 // RefreshOAuthToken refreshes the OAuth token
 func (c *Client) RefreshOAuthToken(refreshToken string) (*oauth2.Token, error) {
 	config := oauth2.Config{
@@ -102,10 +98,6 @@ func (c *Client) RefreshOAuthToken(refreshToken string) (*oauth2.Token, error) {
 	return token, err
 }
 
-func RefreshOAuthToken(refreshToken string) (*oauth2.Token, error) {
-	return globalClient.RefreshOAuthToken(refreshToken)
-}
-
 func (c *Client) GetTokens(p int, pageSize int) ([]*Token, int, error) {
 	queryMap := map[string]string{
 		"owner":    c.OrganizationName,
@@ -128,10 +120,6 @@ func (c *Client) GetTokens(p int, pageSize int) ([]*Token, int, error) {
 	return tokens, int(response.Data2.(float64)), nil
 }
 
-func GetTokens(p int, pageSize int) ([]*Token, int, error) {
-	return globalClient.GetTokens(p, pageSize)
-}
-
 func (c *Client) DeleteToken(name string) (bool, error) {
 	organization := Organization{
 		Owner: "admin",
@@ -149,7 +137,3 @@ func (c *Client) DeleteToken(name string) (bool, error) {
 
 	return resp.Data == "Affected", nil
 }
-
-func DeleteToken(name string) (bool, error) {
-	return globalClient.DeleteToken(name)
-}
diff --git a/casdoorsdk/token_global.go b/casdoorsdk/token_global.go
new file mode 100644
index 0000000..07512b2
--- /dev/null
+++ b/casdoorsdk/token_global.go
@@ -0,0 +1,35 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+import (
+	"golang.org/x/oauth2"
+)
+
+func GetOAuthToken(code string, state string) (*oauth2.Token, error) {
+	return globalClient.GetOAuthToken(code, state)
+}
+
+func RefreshOAuthToken(refreshToken string) (*oauth2.Token, error) {
+	return globalClient.RefreshOAuthToken(refreshToken)
+}
+
+func GetTokens(p int, pageSize int) ([]*Token, int, error) {
+	return globalClient.GetTokens(p, pageSize)
+}
+
+func DeleteToken(name string) (bool, error) {
+	return globalClient.DeleteToken(name)
+}
diff --git a/casdoorsdk/url.go b/casdoorsdk/url.go
index 0969379..37ba366 100644
--- a/casdoorsdk/url.go
+++ b/casdoorsdk/url.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -29,10 +29,6 @@ func (c *Client) GetSignupUrl(enablePassword bool, redirectUri string) string {
 	}
 }
 
-func GetSignupUrl(enablePassword bool, redirectUri string) string {
-	return globalClient.GetSignupUrl(enablePassword, redirectUri)
-}
-
 func (c *Client) GetSigninUrl(redirectUri string) string {
 	// origin := "https://door.casbin.com"
 	// redirectUri := fmt.Sprintf("%s/callback", origin)
@@ -42,10 +38,6 @@ func (c *Client) GetSigninUrl(redirectUri string) string {
 		c.Endpoint, c.ClientId, url.QueryEscape(redirectUri), scope, state)
 }
 
-func GetSigninUrl(redirectUri string) string {
-	return globalClient.GetSigninUrl(redirectUri)
-}
-
 func (c *Client) GetUserProfileUrl(userName string, accessToken string) string {
 	param := ""
 	if accessToken != "" {
@@ -54,10 +46,6 @@ func (c *Client) GetUserProfileUrl(userName string, accessToken string) string {
 	return fmt.Sprintf("%s/users/%s/%s%s", c.Endpoint, c.OrganizationName, userName, param)
 }
 
-func GetUserProfileUrl(userName string, accessToken string) string {
-	return globalClient.GetUserProfileUrl(userName, accessToken)
-}
-
 func (c *Client) GetMyProfileUrl(accessToken string) string {
 	param := ""
 	if accessToken != "" {
@@ -65,7 +53,3 @@ func (c *Client) GetMyProfileUrl(accessToken string) string {
 	}
 	return fmt.Sprintf("%s/account%s", c.Endpoint, param)
 }
-
-func GetMyProfileUrl(accessToken string) string {
-	return globalClient.GetMyProfileUrl(accessToken)
-}
diff --git a/casdoorsdk/url_global.go b/casdoorsdk/url_global.go
new file mode 100644
index 0000000..da9b879
--- /dev/null
+++ b/casdoorsdk/url_global.go
@@ -0,0 +1,31 @@
+// Copyright 2023 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+func GetSignupUrl(enablePassword bool, redirectUri string) string {
+	return globalClient.GetSignupUrl(enablePassword, redirectUri)
+}
+
+func GetSigninUrl(redirectUri string) string {
+	return globalClient.GetSigninUrl(redirectUri)
+}
+
+func GetUserProfileUrl(userName string, accessToken string) string {
+	return globalClient.GetUserProfileUrl(userName, accessToken)
+}
+
+func GetMyProfileUrl(accessToken string) string {
+	return globalClient.GetMyProfileUrl(accessToken)
+}
diff --git a/casdoorsdk/user.go b/casdoorsdk/user.go
index b11aa46..62baf8c 100644
--- a/casdoorsdk/user.go
+++ b/casdoorsdk/user.go
@@ -222,10 +222,6 @@ func (c *Client) GetGlobalUsers() ([]*User, error) {
 	return users, nil
 }
 
-func GetGlobalUsers() ([]*User, error) {
-	return globalClient.GetGlobalUsers()
-}
-
 func (c *Client) GetUsers() ([]*User, error) {
 	queryMap := map[string]string{
 		"owner": c.OrganizationName,
@@ -246,10 +242,6 @@ func (c *Client) GetUsers() ([]*User, error) {
 	return users, nil
 }
 
-func GetUsers() ([]*User, error) {
-	return globalClient.GetUsers()
-}
-
 func (c *Client) GetSortedUsers(sorter string, limit int) ([]*User, error) {
 	queryMap := map[string]string{
 		"owner":  c.OrganizationName,
@@ -272,10 +264,6 @@ func (c *Client) GetSortedUsers(sorter string, limit int) ([]*User, error) {
 	return users, nil
 }
 
-func GetSortedUsers(sorter string, limit int) ([]*User, error) {
-	return globalClient.GetSortedUsers(sorter, limit)
-}
-
 func (c *Client) GetPaginationUsers(p int, pageSize int, queryMap map[string]string) ([]*User, int, error) {
 	queryMap["owner"] = c.OrganizationName
 	queryMap["p"] = strconv.Itoa(p)
@@ -296,10 +284,6 @@ func (c *Client) GetPaginationUsers(p int, pageSize int, queryMap map[string]str
 	return users, int(response.Data2.(float64)), nil
 }
 
-func GetPaginationUsers(p int, pageSize int, queryMap map[string]string) ([]*User, int, error) {
-	return globalClient.GetPaginationUsers(p, pageSize, queryMap)
-}
-
 func (c *Client) GetUserCount(isOnline string) (int, error) {
 	queryMap := map[string]string{
 		"owner":    c.OrganizationName,
@@ -321,10 +305,6 @@ func (c *Client) GetUserCount(isOnline string) (int, error) {
 	return count, nil
 }
 
-func GetUserCount(isOnline string) (int, error) {
-	return globalClient.GetUserCount(isOnline)
-}
-
 func (c *Client) GetUser(name string) (*User, error) {
 	queryMap := map[string]string{
 		"id": fmt.Sprintf("%s/%s", c.OrganizationName, name),
@@ -345,10 +325,6 @@ func (c *Client) GetUser(name string) (*User, error) {
 	return user, nil
 }
 
-func GetUser(name string) (*User, error) {
-	return globalClient.GetUser(name)
-}
-
 func (c *Client) GetUserByEmail(email string) (*User, error) {
 	queryMap := map[string]string{
 		"owner": c.OrganizationName,
@@ -370,10 +346,6 @@ func (c *Client) GetUserByEmail(email string) (*User, error) {
 	return user, nil
 }
 
-func GetUserByEmail(email string) (*User, error) {
-	return globalClient.GetUserByEmail(email)
-}
-
 func (c *Client) GetUserByPhone(phone string) (*User, error) {
 	queryMap := map[string]string{
 		"owner": c.OrganizationName,
@@ -395,10 +367,6 @@ func (c *Client) GetUserByPhone(phone string) (*User, error) {
 	return user, nil
 }
 
-func GetUserByPhone(phone string) (*User, error) {
-	return globalClient.GetUserByPhone(phone)
-}
-
 func (c *Client) GetUserByUserId(userId string) (*User, error) {
 	queryMap := map[string]string{
 		"owner":  c.OrganizationName,
@@ -420,10 +388,6 @@ func (c *Client) GetUserByUserId(userId string) (*User, error) {
 	return user, nil
 }
 
-func GetUserByUserId(userId string) (*User, error) {
-	return globalClient.GetUserByUserId(userId)
-}
-
 // note: oldPassword is not required, if you don't need, just pass a empty string
 func (c *Client) SetPassword(owner, name, oldPassword, newPassword string) (bool, error) {
 	param := map[string]string{
@@ -446,65 +410,36 @@ func (c *Client) SetPassword(owner, name, oldPassword, newPassword string) (bool
 	return resp.Status == "ok", nil
 }
 
-// note: oldPassword is not required, if you don't need, just pass a empty string
-func SetPassword(owner, name, oldPassword, newPassword string) (bool, error) {
-	return globalClient.SetPassword(owner, name, oldPassword, newPassword)
-}
-
 func (c *Client) UpdateUserById(id string, user *User) (bool, error) {
 	_, affected, err := c.modifyUserById("update-user", id, user, nil)
 	return affected, err
 }
 
-func UpdateUserById(id string, user *User) (bool, error) {
-	return globalClient.UpdateUserById(id, user)
-}
-
 func (c *Client) UpdateUser(user *User) (bool, error) {
 	_, affected, err := c.modifyUser("update-user", user, nil)
 	return affected, err
 }
 
-func UpdateUser(user *User) (bool, error) {
-	return globalClient.UpdateUser(user)
-}
-
 func (c *Client) UpdateUserForColumns(user *User, columns []string) (bool, error) {
 	_, affected, err := c.modifyUser("update-user", user, columns)
 	return affected, err
 }
 
-func UpdateUserForColumns(user *User, columns []string) (bool, error) {
-	return globalClient.UpdateUserForColumns(user, columns)
-}
-
 func (c *Client) AddUser(user *User) (bool, error) {
 	_, affected, err := c.modifyUser("add-user", user, nil)
 	return affected, err
 }
 
-func AddUser(user *User) (bool, error) {
-	return globalClient.AddUser(user)
-}
-
 func (c *Client) DeleteUser(user *User) (bool, error) {
 	_, affected, err := c.modifyUser("delete-user", user, nil)
 	return affected, err
 }
 
-func DeleteUser(user *User) (bool, error) {
-	return globalClient.DeleteUser(user)
-}
-
 func (c *Client) CheckUserPassword(user *User) (bool, error) {
 	response, _, err := c.modifyUser("check-user-password", user, nil)
 	return response.Status == "ok", err
 }
 
-func CheckUserPassword(user *User) (bool, error) {
-	return globalClient.CheckUserPassword(user)
-}
-
 func (u User) GetId() string {
 	return fmt.Sprintf("%s/%s", u.Owner, u.Name)
 }
diff --git a/casdoorsdk/user_global.go b/casdoorsdk/user_global.go
new file mode 100644
index 0000000..f1980ff
--- /dev/null
+++ b/casdoorsdk/user_global.go
@@ -0,0 +1,80 @@
+// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed 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 casdoorsdk
+
+func GetGlobalUsers() ([]*User, error) {
+	return globalClient.GetGlobalUsers()
+}
+
+func GetUsers() ([]*User, error) {
+	return globalClient.GetUsers()
+}
+
+func GetSortedUsers(sorter string, limit int) ([]*User, error) {
+	return globalClient.GetSortedUsers(sorter, limit)
+}
+
+func GetPaginationUsers(p int, pageSize int, queryMap map[string]string) ([]*User, int, error) {
+	return globalClient.GetPaginationUsers(p, pageSize, queryMap)
+}
+
+func GetUserCount(isOnline string) (int, error) {
+	return globalClient.GetUserCount(isOnline)
+}
+
+func GetUser(name string) (*User, error) {
+	return globalClient.GetUser(name)
+}
+
+func GetUserByEmail(email string) (*User, error) {
+	return globalClient.GetUserByEmail(email)
+}
+
+func GetUserByPhone(phone string) (*User, error) {
+	return globalClient.GetUserByPhone(phone)
+}
+
+func GetUserByUserId(userId string) (*User, error) {
+	return globalClient.GetUserByUserId(userId)
+}
+
+// note: oldPassword is not required, if you don't need, just pass a empty string
+func SetPassword(owner, name, oldPassword, newPassword string) (bool, error) {
+	return globalClient.SetPassword(owner, name, oldPassword, newPassword)
+}
+
+func UpdateUserById(id string, user *User) (bool, error) {
+	return globalClient.UpdateUserById(id, user)
+}
+
+func UpdateUser(user *User) (bool, error) {
+	return globalClient.UpdateUser(user)
+}
+
+func UpdateUserForColumns(user *User, columns []string) (bool, error) {
+	return globalClient.UpdateUserForColumns(user, columns)
+}
+
+func AddUser(user *User) (bool, error) {
+	return globalClient.AddUser(user)
+}
+
+func DeleteUser(user *User) (bool, error) {
+	return globalClient.DeleteUser(user)
+}
+
+func CheckUserPassword(user *User) (bool, error) {
+	return globalClient.CheckUserPassword(user)
+}