private @Nullable Map.Entry<String, String> showEditor(Map.Entry<String, String> entry) {
      PythonDocumentationEntryEditor editor = new PythonDocumentationEntryEditor(this);
      if (entry != null) {
        editor.setEntry(entry);
      }
      editor.show();
      if (editor.getExitCode() != DialogWrapper.OK_EXIT_CODE) {
        return null;
      }
      return editor.getEntry();
    }
private @Nullable Map.Entry<String, String> showEditor(Map.Entry<String, String> entry)