code: protected final void setDescription(String description) {
          mCurrentState.setDescription(description);
          mServiceHandler.removeCallbacks(mPublishStateRunnable);
          mServiceHandler.post(mPublishStateRunnable);
      }
docs: Sets the current source description of the current configuration. For example, 'Popular photos
  tagged "landscape"'). If no description is provided, the <code>android:description</code>
  element of the source's service element in the manifest will be used.
  
  @param description the new description to be shown when the source is selected.