public UserAuthAttributes getUserAuthAttributes(final String cqName) {
    return cqNameVsUserAuth.get(cqName);
  }
This is per ServerConnection or per CacheClientProxy, corresponding to only one client
connection.
Credentials should usually be just one, only multiple in multi-user case.
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/ClientUserAuths.java