private void initProcessors(KeycloakSessionFactory keycloakSessionFactory) {
        eventProcessorMap.put(
             EventType.REGISTER,
             new NewUserEventProcessorFactory(options, keycloakSessionFactory)
        );
    }
Creates {@link ApimanEventListenerProvider}

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