public SldLayoutId addSlideLayoutIdListEntry(SlideLayoutPart slideLayoutPart)
throws InvalidFormatException {
Relationship rel = this.addTargetPart(slideLayoutPart);
SldLayoutId entry = Context.getpmlObjectFactory().createSlideLayoutIdListSldLayoutId();
entry.setId( new Long(this.getSlideLayoutOrMasterId()) );
entry.setRid(rel.getId());
this.getJaxbElement().getSldLayoutIdLst().getSldLayoutId().add(entry);
return entry;
}