* @see org.apache.poi.hslf.usermodel.SlideShow#addHyperlink(Hyperlink)
*/
public void setHyperlink(int linkId, int beginIndex, int endIndex){
//TODO validate beginIndex and endIndex and throw IllegalArgumentException
InteractiveInfo info = new InteractiveInfo();
InteractiveInfoAtom infoAtom = info.getInteractiveInfoAtom();
infoAtom.setAction(InteractiveInfoAtom.ACTION_HYPERLINK);
infoAtom.setHyperlinkType(InteractiveInfoAtom.LINK_Url);
infoAtom.setHyperlinkID(linkId);
_txtbox.appendChildRecord(info);