CEventCalendar::GetSectionId

function GetSectionId()
{
	if (!isset($this->sectionId))
	{
		if ($this->bOwner && intval($this->ownerId) > 0)
			$this->sectionId = $this->GetSectionIDByOwnerId($this->ownerId, $this->ownerType, $this->iblockId);
		else
			$this->sectionId = 0;
	}
	return $this->sectionId;
}