@Override
        public void run(AnActionButton button) {
          myCustomDictionariesTableView.stopEditing();
          doChooseFiles(project, files -> files.stream()
            .map(VirtualFile::getPath)
            .map(PathUtil::toSystemDependentName)
            .filter(path -> !myCustomDictionariesTableView.getItems().contains(path))
            .forEach(path -> myCustomDictionariesTableView.getListTableModel().addRow(path)));
        }
@Override
        public void run(AnActionButton button)