public function getCreatedBy()
    {
        $createdByAttribute = $this->createdByAttribute;
        return (!is_string($createdByAttribute) || empty($createdByAttribute)) ? null : $this->$createdByAttribute->getData();
    }
public function getCreatedBy()
    {
        $createdByAttribute = $this->createdByAttribute;
        return (!is_string($createdByAttribute) || empty($createdByAttribute)) ? null : $this->$createdByAttribute->getData();
    }
public function getCreatedBy ( ) { $ createdByAttribute = $ this -> createdByAttribute ; return ( ! is_string ( $ createdByAttribute ) || empty ( $ createdByAttribute ) ) ? null : $ this -> $ createdByAttribute -> getData ( ) ; }
Get created_by attribute.
@return string|null
Get created_by attribute .