function getPGTIouFilename($pgt_iou)
    {
        phpCAS::traceBegin();
        $filename = $this->getPath()."phpcas-".hash("sha256", $pgt_iou);
//        $filename = $this->getPath().$pgt_iou.'.plain';
        phpCAS::trace("Sha256 filename:" . $filename);
        phpCAS::traceEnd();
        return $filename;
    }
function getPGTIouFilename($pgt_iou)
    {
        phpCAS::traceBegin();
        $filename = $this->getPath()."phpcas-".hash("sha256", $pgt_iou);
//        $filename = $this->getPath().$pgt_iou.'.plain';
        phpCAS::trace("Sha256 filename:" . $filename);
        phpCAS::traceEnd();
        return $filename;
    }
function getPGTIouFilename ( $ pgt_iou ) { phpCAS :: traceBegin ( ) ; $ filename = $ this -> getPath ( ) . "phpcas-" . hash ( "sha256" , $ pgt_iou ) ; //        $filename = $this->getPath().$pgt_iou.'.plain'; phpCAS :: trace ( "Sha256 filename:" . $ filename ) ; phpCAS :: traceEnd ( ) ; return $ filename ; }
This method returns the filename corresponding to a PGT Iou.

@param string $pgt_iou the PGT iou.

@return a filename
@private
This method returns the filename corresponding to a PGT Iou .