public function getAllAnnotations($pageNumber)
    {

        $iTotalAnnotation = $this->GetAnnotationsCount($pageNumber);
        $listAnnotations = array();
        for ($index = 1; $index <= $iTotalAnnotation; $index++) {
            array_push($listAnnotations, $this->GetAnnotation($pageNumber, $index));
        }
        return $listAnnotations;
    }