code: public void callRpcWrapped(S request, RpcResponseHandler<? extends T> responseHandler) throws IOException {
          for (int i = 0; i < _maximumRetries; ++i) {
              try {
                  callRpcChecked(request, responseHandler);
                  return;
              } catch (RpcException e) {
                  handleRpcException(e, i);
              }
          }
      }
docs: Make the wrapped call and unmarshall the returned Xdr to a response,
  getting the IP key from the request. If an RPC Exception is being thrown,
  and retries remain, then log the exception and retry.
  
  @param request
  The request to send.
  @param responseHandler
  A response handler.
  @throws IOException