protected String bundleResolutionErrorMessage(ComponentSpecification bundleSpec) {
        return "If a bundle with the same name is installed, there is a either a version mismatch " +
                "or the installed bundle's version contains a qualifier string.";
    }
Tries to resolve the given class from this class' bundle.
If unsuccessful, resolves the class from the system bundle (jdisc_core).
container-core/src/main/java/com/yahoo/osgi/OsgiImpl.java