public function getCreationDate()
    {
        if (!isset($this->data[self::CREATION_DATE])) {
            return false;
        }

        return $this->data[self::CREATION_DATE];
    }
public function getCreationDate()
    {
        if (!isset($this->data[self::CREATION_DATE])) {
            return false;
        }

        return $this->data[self::CREATION_DATE];
    }
public function getCreationDate ( ) { if ( ! isset ( $ this -> data [ self :: CREATION_DATE ] ) ) { return false ; } return $ this -> data [ self :: CREATION_DATE ] ; }
Returns the creation datetime, if it exists

@return \DateTime|boolean
Returns the creation datetime if it exists