private function _store_plans( $store = true ) {
            $this->_logger->entrance();

            $plans = self::get_all_plans( $this->_module_type );

            // Copy plans.
            $encrypted_plans = array();
            for ( $i = 0, $len = count( $this->_plans ); $i < $len; $i ++ ) {
                $encrypted_plans[] = self::_encrypt_entity( $this->_plans[ $i ] );
            }

            $plans[ $this->_slug ] = $encrypted_plans;

            $this->set_account_option( 'plans', $plans, $store );
        }