Display JDK classes


If one of my classes extends/implements from a class from within the JDK (java.rmi.Remote), this class should be displayed like any other class I defined.

In a class diagramm, I have a package x.networkclient and a package
x.database. In the x.database package, I add an interface which I have defined before in another class diagramm (same package name). All methods are showed.
But if I define the package java.rmi and add the Interface Remote, nothing is displayed.

I do not know if this is possible. Otherwise, take this as a feature request.