CRUDlex\MySQLData::doDelete PHP Method

    protected function doDelete(Entity $entity, $deleteCascade)
    {
        $result = $this->shouldExecuteEvents($entity, 'before', 'delete');
        if (!$result) {
            return static::DELETION_FAILED_EVENT;
        }
        $id = $entity->get('id');
        if ($deleteCascade) {
            $this->deleteChildren($id, $deleteCascade);
        } elseif ($this->hasChildren($id)) {
            return static::DELETION_FAILED_STILL_REFERENCED;
        }
        $query = $this->database->createQueryBuilder();
        $query->update('`' . $this->definition->getTable() . '`')->set('deleted_at', 'UTC_TIMESTAMP()')->where('id = ?')->setParameter(0, $id);
        $query->execute();
        $this->shouldExecuteEvents($entity, 'after', 'delete');
        return static::DELETION_SUCCESS;
    }