public function setId($mixID)
    {
        if ($this->getId() == null) {
            $this->getItem()->set('id', $mixID);
            $this->setMeta(static::IS_CHANGED, true);
        }
    }
public function setId($mixID)
    {
        if ($this->getId() == null) {
            $this->getItem()->set('id', $mixID);
            $this->setMeta(static::IS_CHANGED, true);
        }
    }
{@inheritDoc}