public function addSection(SectionEntity $section, $language)
{
$section = new \Newscoop\Subscription\Section($this->subscription, $section->getNumber());
$section->setStartDate($this->startDate);
$section->setDays($this->days);
$section->setPaidDays($this->paidDays);
$section->setLanguage($language);
$this->sections[$section->getId()] = $section;
}