Mercator\Mapping::delete PHP Method

    public function delete()
    {
        global $wpdb;
        $where = array('id' => $this->get_id());
        $where_format = array('%d');
        $result = $wpdb->delete($wpdb->dmtable, $where, $where_format);
        if (empty($result)) {
            return new \WP_Error('mercator.mapping.delete_failed');
        }
        // Update the cache
        wp_cache_delete('id:' . $this->get_site_id(), 'domain_mapping');
        wp_cache_delete('domain:' . $this->get_domain(), 'domain_mapping');
        /**
         * Fires after a mapping has been delete.
         *
         * @param Mercator\Mapping $mapping         The mapping object.
         */
        do_action('mercator.mapping.deleted', $this);
        return true;
    }