Init(aDocViewerImpl, aPresContext, aPrintOptions, aPO, aDelay);
Init(aDocViewerImpl, aPresContext, aPrintSettings, aPO, aDelay);
  nsresult Start(DocumentViewerImpl* aDocViewerImpl,                  nsIPresContext*     aPresContext,                 nsIPrintOptions*    aPrintOptions,                 PrintObject*        aPO,                 PRUint32            aDelay)   {    Init(aDocViewerImpl, aPresContext, aPrintOptions, aPO, aDelay);    return StartTimer();  }