ConversationID id = cmodel.getConversationAt(null, selected);
ConversationID id = cmodel.getConversationAt(selected);
            public void valueChanged(ListSelectionEvent evt) {                int selected = conversationTable.getSelectedRow();                if (selected == -1) {                    _selectedContent.setContent(null);                    return;                }                selected = _conversationSorter.modelIndex(selected);                ConversationModel cmodel = _model.getComparisonModel();                ConversationID id = cmodel.getConversationAt(null, selected);                Response response = cmodel.getResponse(id);                String contentType = response.getHeader("Content-Type");                _selectedContent.setContentType(contentType);                _selectedContent.setContent(response.getContent());            }