public class OptimizelyUserContext{public OptimizelyUserContext(Optimizely optimizely,string userId,UserAttributes userAttributes,ForcedDecisionsStore forcedDecisionsStore,IErrorHandler errorHandler, ILogger logger);      // Set an attribute for the user    public void SetAttribute(string key, object value);    // Get attributes for the user    public UserAttributes GetAttributes();    // Make a decision about which flag variation the user buckets into for the flag key     public OptimizelyDecision Decide(string key, OptimizelyDecideOption[] options);    // Make decisions about which flag variations the user buckets into for flag keys    public Dictionary<string, OptimizelyDecision> DecideForKeys(string[] keys,    OptimizelyDecideOption[] options);    // Make decisions about which flag variations the user buckets into for all flags    public Dictionary<string, OptimizelyDecision> DecideAll(OptimizelyDecideOption[] options);    // Track user event    public void TrackEvent(string eventName, EventTags eventTags);    // Sets a forced decision (variationKey) for a given decision context    public bool 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 bool RemoveForcedDecision(OptimizelyDecisionContext context);    // Removes all the forced decisions (variationKeys) for the user context    public bool RemoveAllForcedDecisions();        /*     * The following methods require Real-Time Audiences for Feature Experimentation.     * See the note following the code sample.     */    // An array of segment names that the user is qualified for.     // The result of **fetchQualifiedSegments()** is saved here.     // Can be null 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 for utilizing your own fetching service.       public List<string> GetQualifiedSegments();        // Set the qualified audiences that the user is qualified for.    public void SetQualifiedSegments(List<string> qualifiedSegments);    // Fetch all qualified segments for the user context.     // The audiences fetched are saved in the **QualifiedSegments** array    // and can be accessed any time.     public bool FetchQualifiedSegments(List<OdpSegmentOption> segmentOptions = null);    // Fetch all qualified audiences 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 Task FetchQualifiedSegments(Action<bool> callback,    List<OdpSegmentOption> segmentOptions = null);        //  Check is the user is qualified for the given segment.     public bool IsQualifiedFor(string segment);}