@Override
      public void valueChanged(final ListSelectionEvent e) {
        int index = myTable.getSelectionModel().getLeadSelectionIndex();
        if (index != -1) {
          UsageInfo usageInfo = myOverridingMethods.get(index);
          myUsagePreviewPanel.updateLayout(usageInfo.getProject(), Collections.singletonList(usageInfo));
        }
        else {
          myUsagePreviewPanel.updateLayout(myProject, null);
        }
      }
@Override
      public void valueChanged(final ListSelectionEvent e)