@CheckForNull
  public Collection<ChangedFile> get() {
    return changedFiles;
  }
@Test
  public void testGetter() {
    Path filePath = Paths.get("files");
    ChangedFile file = ChangedFile.of(filePath);
    Set<ChangedFile> files = Set.of(file);
    scmChangedFiles = new ScmChangedFiles(files);
    assertThat(scmChangedFiles.get()).containsOnly(file);
  }