Container and module using third party library

ContainerUsingLibrary.java

public class ContainerUsingLibrary extends Container
{
    private final Resource resource = ResourceLibrary.getResource(ContainerUsingLibrary.class);
}

ModuleUsingLibrary.java

public class ModuleUsingLibrary extends Module
{
    private final Resource resource = ResourceLibrary.getResource(ModuleUsingLibrary.class);
}

ResourceLibrary.java

public class ResourceLibrary
{
    // simulate a 3rd party library that holds references to its clients
    private static final Map<Class<?>, Resource> lookup = new HashMap<Class<?>, Resource>();

    public static synchronized Resource getResource(Class<?> clazz)
    {
        if (!lookup.containsKey(clazz))
        {
            lookup.put(clazz, new Resource());
        }

        return lookup.get(clazz);
    }
}