*
* @param placeholder
*/
public void setPlaceholder(Placeholder placeholder){
CTShape sh = (CTShape)getXmlObject();
CTApplicationNonVisualDrawingProps nv = sh.getNvSpPr().getNvPr();
if(placeholder == null) {
if(nv.isSetPh()) nv.unsetPh();
} else {
nv.addNewPh().setType(STPlaceholderType.Enum.forInt(placeholder.ordinal() + 1));
}
}