def store_iou(pgt_iou, pgt)
      pstore = open_pstore

      pstore.transaction do
        pstore[pgt_iou] = pgt
      end
    end
def store_iou(pgt_iou, pgt)
      pstore = open_pstore

      pstore.transaction do
        pstore[pgt_iou] = pgt
      end
    end
Associates the given PGTIOU and PGT.

 @param [String] pgt_iou
 @param [String] pgt

 @return [void]