Pimcore\Model\Document::setProperty PHP Method

    public function setProperty($name, $type, $data, $inherited = false, $inheritable = true)
    {
        $this->getProperties();
        $property = new Property();
        $property->setType($type);
        $property->setCid($this->getId());
        $property->setName($name);
        $property->setCtype("document");
        $property->setData($data);
        $property->setInherited($inherited);
        $property->setInheritable($inheritable);
        $this->properties[$name] = $property;
        return $this;
    }