skeeks\cms\relatedProperties\propertyTypes\PropertyTypeList::addRules PHP Method

    public function addRules()
    {
        if ($this->isMultiple) {
            $this->property->relatedPropertiesModel->addRule($this->property->code, 'safe');
        } else {
            $this->property->relatedPropertiesModel->addRule($this->property->code, 'integer');
        }
        return $this;
    }