code: public ResourceadapterType<ConnectorDescriptor> getOrCreateResourceadapter()
     {
        Node node = model.getOrCreate("resourceadapter");
        ResourceadapterType<ConnectorDescriptor> resourceadapter = new ResourceadapterTypeImpl<ConnectorDescriptor>(this, "resourceadapter", model, node);
        return resourceadapter;
     }
docs: If not already created, a new <code>resourceadapter</code> element with the given value will be created.
  Otherwise, the existing <code>resourceadapter</code> element will be returned.
  @return  a new or existing instance of <code>ResourceadapterType<ConnectorDescriptor></code>