static CommitMeta buildCommitMetadata(String commitMsg, Map<String, String> catalogOptions) {
    return catalogOptions(CommitMeta.builder().message(commitMsg), catalogOptions).build();
  }
@Test
  public void testAuthorIsNullWithoutJvmUser() {
    String jvmUserName = System.getProperty("user.name");
    try {
      System.clearProperty("user.name");
      CommitMeta commitMeta = NessieUtil.buildCommitMetadata("commit msg", ImmutableMap.of());
      assertThat(commitMeta.getAuthor()).isNull();
    } finally {
      System.setProperty("user.name", jvmUserName);
    }
  }