@Override
  public void updateContentSelectionColor() {
    // TODO (timkornau): This is kind of a hack, should be improved

    if (m_content.isSelectable()) {
      m_content.updateContentSelectionColor(getFillColor(), isSelected());
    }
  }
Returns the user data associated with the realizer.

@return The user data associated with the realizer.
java/zylib/src/main/java/com/google/security/zynamics/zylib/yfileswrap/gui/zygraph/realizers/ZyGroupNodeRealizer.java