private function turn_on() {
            $this->_logger->entrance();

            if ( $this->is_on() || ! isset( $this->_storage->connectivity_test['is_active'] ) ) {
                return false;
            }

            $updated_connectivity              = $this->_storage->connectivity_test;
            $updated_connectivity['is_active'] = true;
            $updated_connectivity['timestamp'] = WP_FS__SCRIPT_START_TIME;
            $this->_storage->connectivity_test = $updated_connectivity;

            $this->_is_on = true;

            return true;
        }