code: public AddressingType<PortComponentRefType<T>> getOrCreateAddressing()
     {
        Node node = childNode.getOrCreate("addressing");
        AddressingType<PortComponentRefType<T>> addressing = new AddressingTypeImpl<PortComponentRefType<T>>(this, "addressing", childNode, node);
        return addressing;
     }
docs: If not already created, a new <code>addressing</code> element with the given value will be created.
  Otherwise, the existing <code>addressing</code> element will be returned.
  @return  a new or existing instance of <code>AddressingType<PortComponentRefType<T>></code>