/**
  * Register a ICodeSelectorTarget. This is informed when an alement is chosen in a CodeSelector.
  *
  * @param target the ICodeSelectorTarget to set.
  */
 public void setCodeSelectorTarget(final ICodeSelectorTarget target) {
   if (codeSelectorTarget != null) {
     codeSelectorTarget.registered(false);
   }
   codeSelectorTarget = target;
   codeSelectorTarget.registered(true);
 }
  /** Unregister the currently registered ICodeSelectorTarget. */
  public void removeCodeSelectorTarget() {
    if (codeSelectorTarget != null) {
      codeSelectorTarget.registered(false);
    }

    codeSelectorTarget = null;
  }