private MALMessageHeader addInitialHeaderAssertions(MALMessageHeader expectedInitialHeader) {
    MALMessage msg =
        TransportInterceptor.instance().getLastSentMessage(ipTestConsumer.getConsumer().getURI());
    MALMessageHeader msgHeader = msg.getHeader();

    expectedInitialHeader.setURITo(msgHeader.getURITo());

    AssertionHelper.checkHeader(
        "PatternTest.checkHeader", assertions, msgHeader, expectedInitialHeader);

    return msgHeader;
  }