How to use the smbprotocol.open.ImpersonationLevel function in smbprotocol

# delete the service as it already exists
                service_status = scmr_api.query_service_status(service_handle)
                if service_status.current_state != CurrentState.SERVICE_STOPPED:
                    scmr_api.control_service(service_handle,
                                             ControlCode.SERVICE_CONTROL_STOP)
                scmr_api.delete_service(service_handle)
                scmr_api.close_service_handle_w(service_handle)

            # copy the executable across and overwrite the existing file
            tree_admin = TreeConnect(session, r"\\%s\ADMIN$"
                                     % session.connection.server_name)
            tree_admin.connect()

            # Copy the paexec payload to the host
            paexec = Open(tree_admin, exe_path)
            paexec.open(ImpersonationLevel.Impersonation,
                        FilePipePrinterAccessMask.FILE_WRITE_DATA,
                        FileAttributes.FILE_ATTRIBUTE_NORMAL,
                        ShareAccess.FILE_SHARE_READ,
                        CreateDisposition.FILE_OVERWRITE_IF,
                        CreateOptions.FILE_NON_DIRECTORY_FILE)
            try:
                for (payload, offset) in exe_payload(65536):
                    paexec.write(payload, offset)
            finally:
                paexec.close(False)

            # now create a branch new service here
            service_handle = scmr_api.create_service_wow64_w(
                scm_handle,
                svc_name,
                svc_name,