@Override
    public boolean isEmpty() {
        return false;
    }
Apiman's option parsing code works with a map interface, however, Keycloak's {@link Scope} (Config), does
not implement Map (only basic get operations). To work around this we provide a shim/delegate with the
majority of the methods stubbed out. It's not beautiful, but it works.

@see GenericOptionsParser
@see AccountApprovalOptions

@author Marc Savy {@literal <marc@blackparrotlabs.io>}
sso/keycloak/extensions/src/main/java/io/apiman/manager/sso/keycloak/KeycloakOptsMapShim.java