public static Coder<ResponseMetadata> responseMetadata() {
    return ResponseMetadataCoder.of();
  }
@Test
  public void testResponseMetadataDecodeEncodeEquals() throws Exception {
    ResponseMetadata value = buildResponseMetadata();
    ResponseMetadata clone = CoderUtils.clone(AwsCoders.responseMetadata(), value);
    assertThat(clone.getRequestId(), equalTo(value.getRequestId()));
  }