@Test
public void testReorder_noFiles() throws IOException {

  // - preparation
  final FileMatcher fileMatcher= new FileMatcher(Paths.get(""), new String[]{""}, new String[]{""});
  // - execution
  new KiltReformatter()
    .reorderByKey(fileMatcher, AttachCommentsTo.NEXT_PROPERTY, UTF_8);
  //TODO: Verify that warning message gets logged?
  // - verification
}