String asConfig(int position) {
            return  "components[" + position + "].id \"" + componentId + "\"\n" +
                    "components[" + position + "].classId \"" + classId.getName() + "\"\n" +
                    "components[" + position + "].configId \"" + dirConfigSource.configId() + "\"\n" ;
        }
@author Tony Vaagenes
@author gjoranv
@author ollivir
container-core/src/test/java/com/yahoo/container/di/ContainerTestBase.java