public class OptimizelyUserContext {    public String getUserId()    public Map<String, Object> getAttributes()    public OptimizelyUserContext(Optimizely optimizely,                                  String userId,                                  Map<String, Object> attributes)          // set an attribute for the user    public void setAttribute(String key, Object value)        // make a decision about which flag variation the user buckets into for the flag key    public OptimizelyDecision decide(String key,                                      List<OptimizelyDecideOption> options)        // make decisions about which flag variations the user buckets into for flag keys      public Map<String, OptimizelyDecision> decideForKeys(List<String> keys,                                       List<OptimizelyDecideOption> options)        // make decisions about which flag variations the user buckets into for all flags      public Map<String, OptimizelyDecision> decideAll(List<OptimizelyDecideOption> options)        // track user event      public void trackEvent(String eventName, Map<String, ?> eventTags)      // sets a forced decision (variationKey) for a given decision context    public Boolean setForcedDecision(OptimizelyDecisionContext context, OptimizelyForcedDecision decision)    // returns the forced decision (variationKey) for a given decision context    public OptimizelyForcedDecision getForcedDecision(OptimizelyDecisionContext context)    // removes the forced decision (variationKey) for a given decision context    public Boolean removeForcedDecision(OptimizelyDecisionContext context)    // removes all the forced decisions (variationKeys) for the user context    public Boolean removeAllForcedDecisions()          //    // The following methods require Real-Time Audiences for Feature Experimentation.     // See the note following the code sample.     //    // An array of audience segment names that the user is qualified for.     // The result of **fetchQualifiedSegments()** is saved here.     // Can be nil if not properly updated with fetchQualifiedSegments().     //     //  You can read and write directly to the qualified segments array.     //  This lets you bypass the remote fetching process from ODP     //  or utilize your own fetching service.       private List<String> qualifiedSegments()           // Fetch all qualified segments for the user context.     // The segments fetched are saved in the **qualifiedSegments** array    // and can be accessed any time.     public Boolean fetchQualifiedSegments(List<ODPSegmentOption> segmentOptions)     // Fetch qualified segments for the user context in a non-blocking manner.     // This method fetches segments in a separate thread and invokes the provided     //  callback when results are available.    public void fetchQualifiedSegments(ODPSegmentCallback callback, List<ODPSegmentOption> segmentOptions)     //  Check is the user qualified for the given segment.     public Boolean isQualifiedFor(String segment)}