public function addDateAdded(DateTime $dateAdded, string $usergroup = ''): void
    {
        $this->dateAdded->setDateValue($dateAdded, $usergroup);
    }
public function addDateAdded(DateTime $dateAdded, string $usergroup = ''): void
    {
        $this->dateAdded->setDateValue($dateAdded, $usergroup);
    }
public function addDateAdded ( DateTime $ dateAdded , string $ usergroup = '' ) : void { $ this -> dateAdded -> setDateValue ( $ dateAdded , $ usergroup ) ; }
Shortcut to easily add the date added value of the item.

@param DateTime $dateAdded The date on which the item was added to the ecommerce system.
@param string $usergroup The usergroup of the date added value.
Shortcut to easily add the date added value of the item .