code: public <T extends ISubscribedState> T setSubscribedState(String componentId, T obj) {
          return setSubscribedState(componentId, Utils.DEFAULT_STREAM_ID, obj);
      }
docs: Synchronizes the default stream from the specified state spout component id with the provided ISubscribedState object.
  
  The recommended usage of this method is as follows:
  <pre>
  _myState = context.setSubscribedState(componentId, new MyState());
  </pre>
  
  @param componentId the id of the StateSpout component to subscribe to
  @param obj         Provided ISubscribedState implementation
  @return Returns the ISubscribedState object provided