public static Node mockComponentNode(Class<?> clazz, String configId, Annotation key) {
        return new ComponentNode(uniqueComponentId(clazz.getName()), configId, clazz, key);
    }
@author gjoranv
@author Tony Vaagenes
@author ollivir
container-core/src/test/java/com/yahoo/container/di/componentgraph/core/ComponentGraphTest.java