private function update_user_name() {
            $this->_logger->entrance();
            $name = fs_request_get( 'fs_user_name_' . $this->get_unique_affix(), '' );

            $api  = $this->get_api_user_scope();
            $user = $api->call( "?plugin_id={$this->_plugin->id}&fields=id,first,last", 'put', array(
                'name' => $name,
            ) );

            if ( ! isset( $user->error ) ) {
                $this->_user->first = $user->first;
                $this->_user->last  = $user->last;
                $this->_store_user();
            } else {
                // handle different error cases.

            }

            return $user;
        }