79     public function addName($name, $usergroup = '')  argument
81         $this->name->setValue($name, $usergroup);
94     public function addSummary($summary, $usergroup = '')  argument
96         $this->summary->setValue($summary, $usergroup);
109     public function addDescription($description, $usergroup = '')  argument
111         $this->description->setValue($description, $usergroup);
124     public function addPrice($price, $usergroup = '')  argument
130         $this->price->setValue($price, $usergroup);
143     public function addUrl($url, $usergroup = '')  argument
145         $this->url->setValue($url, $usergroup);
158     public function addBonus($bonus, $usergroup = '')  argument
160         $this->bonus->setValue($bonus, $usergroup);
173     public function addSalesFrequency($salesFrequency, $usergroup = '')  argument
175         $this->salesFrequency->setValue($salesFrequency, $usergroup);
188     public function addDateAdded(DateTime $dateAdded, $usergroup = '')  argument
190         $this->dateAdded->setDateValue($dateAdded, $usergroup);
203     public function addSort($sort, $usergroup = '')  argument
205         $this->sort->setValue($sort, $usergroup);
210         foreach ($property->getAllValues() as $usergroup => $value) {
211             if (!array_key_exists($usergroup, $this->properties)) {
212                 $this->properties[$usergroup] = [];
217             $this->properties[$usergroup][$property->getKey()] = $value;
262     public function addUsergroup(Usergroup $usergroup)  argument
264         array_push($this->usergroups, $usergroup);