@Override
  public void prepareProperties(@NotNull Map<String, Object> props,
                                String filename,
                                @NotNull FileTemplate template,
                                @NotNull Project project) {
    String fileName = checkAppendExtension(filename, template);
    props.put(FileTemplate.ATTRIBUTE_FILE_NAME, fileName);
  }
@Override
  public void prepareProperties(@NotNull Map<String, Object> props,
                                String filename,
                                @NotNull FileTemplate template,
                                @NotNull Project project)