optimizely_factory_reflection.java

public T getExperimentImpl(String experimentName, String userId){
   Variation variation = this.optimizelyClient.activate(experimentName, userId);

   T retobj = null;
   try {
       String className = this.packageName + "." + variation.getKey();
       Class cls = Class.forName(className);

       Class partypes[] = new Class[0];
       Constructor ct = cls.getConstructor(partypes);
       retobj = (T)ct.newInstance();
   }
   catch (Throwable e) {
       System.err.println(e);
       e.printStackTrace();
       return null;
   }
   return retobj;
}