ToplevelList system = cdlDocument.getSystem();
SystemElement system = cdlDocument.getSystem();
    public void testElementsElementPropagation() throws Exception {        ParseContext context = new ParseContext();        CdlDocument cdlDocument = parseValidCDL(context,                CDL_DOC_EXTENDS_ELEMENT_PROPAGATION);        //xpath tests to verify the stuff        ToplevelList system = cdlDocument.getSystem();        PropertyList component = lookupChildPropertyList(system,                "Component",                "");        assertElementValueEquals(component, "text");    }