public Component<?, ?> getComponent(String clusterId, String componentId) {
        return getContainerCluster(clusterId).getComponentsMap().get(
                ComponentId.fromString(componentId));
    }
Utility functions for testing the ContainerModelBuilder. Note that XML validation will
not be done when using this class

@author gjoranv
config-model/src/test/java/com/yahoo/vespa/model/container/xml/ContainerModelBuilderTestBase.java