public boolean isUsable(final AuthenticationSession session, final ObjectAdapter target, final Identifier identifier) {
final IdentityData targetData = encoderDecoder.encodeIdentityData(target);
final String idString = identifier.toIdentityString(Identifier.CLASS_MEMBERNAME_PARAMETERS);
if (!usabilityCache.containsKey(idString)) {
final AuthorizationResponse response = serverFacade.authorizeUsability(new AuthorizationRequestUsability(session, targetData, idString));
final Boolean authorized = isAuthorized(response);
usabilityCache.put(idString, authorized);
}
return usabilityCache.get(idString);
}