Horde_ActiveSync_Message_Base::__set PHP Method

    public function __set($property, $value)
    {
        if (!array_key_exists($property, $this->_properties)) {
            $this->_logger->err('Unknown property: ' . $property);
            throw new InvalidArgumentException(get_class($this) . ' Unknown property: ' . $property);
        }
        $this->_properties[$property] = $value;
        $this->_exists[$property] = true;
    }