Use MultiView APIs

Hi all,

I am developing netbeans plugin for apache syncope. I need to open editors
in different tabs in same instance like SOURCE and HISTORY. I am tried to
using following code.

MultiViewDescription[] descriptionArray = new MultiViewDescription[0];
descriptionArray[0] = new MultiViewDescription() {
            @Override
            public int getPersistenceType() {
                return 0;
            }

            @Override
            public String getDisplayName() {
                return "Test 1";
            }

            @Override
            public Image getIcon() {
                return null;
            }

            @Override
            public HelpCtx getHelpCtx() {
                return null;
            }

            @Override
            public String preferredID() {
                return "A";
            }

            @Override
            public MultiViewElement createElement() {
                return new MultiViewEditorElement(Lookup.EMPTY);
*//GIVEN RUNTIME ERROR*
            }
};

TopComponent ctc = MultiViewFactory.createMultiView(descriptionArray,
descriptionArray[0]);
ctc.open();
ctc.requestActive();

*//GIVEN RUNTIME ERROR Line give *IllegalArgumentException
<http://download.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true>
saying CloneableEditorSupport
<http://bits.netbeans.org/8.0/javadoc/org-openide-text/org/openide/text/CloneableEditorSupport.html?is-external=true>
is not present in provided Lookup
<http://bits.netbeans.org/8.0/javadoc/org-openide-util/org/openide/util/Lookup.html?is-external=true>
.

I search method to create Lookup object with ClonableEditorSupport. I don't
found suitable solution.

Please help me.

Thanks and Regards.
-- 
Nuwan Sameera.
Undergraduate,
Electronic and Telecommunication Engineering,
University of Moratuwa.