public List<String> listXAttrs(final Path path) throws IOException {
    return new ArrayList<>(retrieveHeaders(path, INVOCATION_OP_XATTR_LIST)
        .keySet());
  }
@Test
  public void testListXAttrKeys() throws Throwable {
    List<String> xAttrs = headerProcessing.listXAttrs(MAGIC_PATH);
    Assertions.assertThat(xAttrs)
        .describedAs("Attribute keys")
        .contains(RETRIEVED_XATTRS);
  }