OptimizelyUserContext for the Java SDK

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)
}