public static DiffContent @NotNull [] getContents() {
    // Assuming that standalone IDE should provide one provider
    final List<DiffPreviewProvider> providers = EP_NAME.getExtensionList();
    if (providers.size() != 0) {
      return providers.get(0).createContents();
    }
    return createContent(LEFT_TEXT, CENTER_TEXT, RIGHT_TEXT, StdFileTypes.JAVA);
  }
public static DiffContent @NotNull [] getContents()