public function render()
{
foreach ($this->oPresentation->getAllMasterSlides() as $oSlideMaster) {
foreach ($oSlideMaster->getAllSlideLayouts() as $oSlideLayout) {
$this->oZip->addFromString('ppt/slideLayouts/_rels/slideLayout' . $oSlideLayout->layoutNr . '.xml.rels', $this->writeSlideLayoutRelationships($oSlideMaster->getRelsIndex()));
$this->oZip->addFromString('ppt/slideLayouts/slideLayout' . $oSlideLayout->layoutNr . '.xml', $this->writeSlideLayout($oSlideLayout));
}
}
return $this->oZip;
}