$foreignCollection declarated but never user

[romantymoshyk]

In next generated piece of code $foreignCollection setted, but not used

/**
 * @param   Property $property The property object to add.
 */
protected function doAddProperty(Property $property)
{
    // set the back reference to this object directly as using provided method either results
    // in endless loop or in multiple relations
    if (!$property->getCampaignTypes()->contains($this)) { $propertyCampaignType = new PropertyCampaignType();
        $propertyCampaignType->setProperty($property);
        $this->addPropertyCampaignType($propertyCampaignType);

        $foreignCollection = $property->getCampaignTypes();
        $foreignCollection[] = $this;
    }
}