public static <T> T readObjectFromConfAsBase64(String key, Configuration conf) throws IOException {
    return readObjectFromConfAsBase64(key, new HadoopParquetConfiguration(conf));
  }
@Test
  public void readObjectFromConfAsBase64UnsetKey() throws Exception {
    assertNull(SerializationUtil.readObjectFromConfAsBase64("non-existant-key", new Configuration()));
  }