public ObjectCannedACL acl() {
    return this.acl;
  }
@Test
  public void testS3FileIoAcl() {
    Map<String, String> map = Maps.newHashMap();
    map.put(S3FileIOProperties.ACL, ObjectCannedACL.AUTHENTICATED_READ.toString());
    S3FileIOProperties properties = new S3FileIOProperties(map);
    assertThat(ObjectCannedACL.AUTHENTICATED_READ).isEqualTo(properties.acl());
  }