SecretKey customKey =
        new SecretKey() {
          @Override
          public String getAlgorithm() {
            return "HmacMD5";
          }

          @Override
          public byte[] getEncoded() {
            return new byte[8];
          }

          @Override
          public String getFormat() {
            return "RAW";
          }
        };
    assertThat(

     */
    public static String encode(final byte[] inData) {
        if (ArrayUtil.isEmpty(inData)) {
            return "";
        }
        return Base64.getEncoder().encodeToString(inData);
    }

    /**
     * Decodes data encoded in Base64.
     * <p>
     * This method uses {@link java.util.Base64.Decoder} for decoding.
     * </p>
     *
     * @param inData

        assertNotNull(id);
        assertEquals(Base64.getEncoder().encodeToString(text.getBytes(CoreLibConstants.CHARSET_UTF_8)), id);

        // Test empty text
        String emptyText = "";
        String emptyId = SuggestUtil.createSuggestTextId(emptyText);
        assertNotNull(emptyId);
        assertEquals(Base64.getEncoder().encodeToString(emptyText.getBytes(CoreLibConstants.CHARSET_UTF_8)), emptyId);

        if (StringUtil.isNotBlank(username) && StringUtil.isNotBlank(password)) {
            final String value = username + ":" + password;
            final String basicAuth = "Basic " + java.util.Base64.getEncoder().encodeToString(value.getBytes(StandardCharsets.UTF_8));
            request.header("Authorization", basicAuth);
        }
        if (sslSocketFactory != null) {
            request.sslSocketFactory(sslSocketFactory);

    /** Settings ID. */
    protected final String settingsId;
    /** Suggest settings. */
    protected final SuggestSettings settings;

    private static final Base64.Encoder encoder = Base64.getEncoder();

    /**
     * Constructor.
     * @param settings Suggest settings
     * @param client OpenSearch client
     * @param settingsIndexName Settings index name
     * @param settingsId Settings ID

 */
public final class SuggestUtil {
    private static final int MAX_QUERY_TERM_NUM = 5;
    private static final int MAX_QUERY_TERM_LENGTH = 48;

    private static final Base64.Encoder encoder = Base64.getEncoder();

    private static final int ID_MAX_LENGTH = 445;

    /**
     * Private constructor to prevent instantiation.
     */
    private SuggestUtil() {
    }

    /**