private void buildNameToDiscoverability() {
        getPrefix(options, 2).forEach((key, subMap) -> {
            nameToDiscoverability.put(key, new DisConfigParser(key, subMap).getRoleSourceDiscoverability());
        });
    }
@author Marc Savy {@literal <marc@blackparrotlabs.io>}
manager/api/security/src/main/java/io/apiman/manager/api/security/impl/DiscoverabilityOptionsParser.java