static {
        // fall back to the safer pure java implementation unless we're in
        // a 64-bit JVM with an 8-byte aligned field offset.
        if (!("64".equals(System.getProperty("sun.arch.data.model"))
            && (BYTE_ARRAY_BASE_OFFSET % 8) == 0
            // sanity check - this should never fail
            && theUnsafe.arrayIndexScale(byte[].class) == 1)) {

      return new SampleElements<>("one", "two", "three", "four", "five");
    }

    @Override
    public SampleElements<String> sampleValues() {
      return new SampleElements<>("january", "february", "march", "april", "may");
    }

    @Override
    public Collection<String> createCollection(Iterable<? extends String> values) {
      return Lists.newArrayList(values);
    }

    @Override

   */
  public static final String SEC_CH_UA = "Sec-CH-UA";
  /**
   * The HTTP <a href="https://wicg.github.io/ua-client-hints/#sec-ch-ua-arch">{@code
   * Sec-CH-UA-Arch}</a> header field name.
   *
   * @since 30.0
   */
  public static final String SEC_CH_UA_ARCH = "Sec-CH-UA-Arch";
  /**
   * The HTTP <a href="https://wicg.github.io/ua-client-hints/#sec-ch-ua-model">{@code
   * Sec-CH-UA-Model}</a> header field name.

      return new SampleElements<>("one", "two", "three", "four", "five");
    }

    @Override
    public SampleElements<String> sampleValues() {
      return new SampleElements<>("january", "february", "march", "april", "may");
    }

    @Override
    public Collection<String> createCollection(Iterable<? extends String> values) {
      return Lists.newArrayList(values);
    }

    @Override