@AfterEach
    void afterEach() {
        stopNodes();
        nodeToJerseyTestMap.clear();
        nodeToListenerMap.clear();
    }
This will be called during initNodes() and provides a means for the sub-class
to provide a fully mocked out implementation of the rest resource. The arguments
are provided so you can have mocks tailored to the node.
stroom-test-common/src/main/java/stroom/test/common/util/test/AbstractMultiNodeResourceTest.java