@Override
    public final ResourceReference refer() {
        return References.NOOP_REFERENCE;
    }
An implementation of {@link SharedResource} that does not do anything.
Useful base class for e.g. mocks of SharedResource sub-interfaces, where reference counting is not the focus.

@author bakksjo
jdisc_core/src/main/java/com/yahoo/jdisc/NoopSharedResource.java