@Test
    void requireThatMergeErrorCanBeIgnored() {
        setupPolicy("Custom", MyPolicy.newMergeError(dstSessName, ErrorCode.APP_FATAL_ERROR, "foo"));
        assertSend("?[Custom]");
        assertAcknowledge();
        assertTrace("Ignoring errors in reply.");
    }
@author havardpe
@author Simon Thoresen Hult
messagebus/src/test/java/com/yahoo/messagebus/routing/RoutingTestCase.java