docs: public static byte[] generateHmacSha1Key() {
  		try {
  			KeyGenerator keyGenerator = KeyGenerator.getInstance(HMACSHA1_ALG);
  			keyGenerator.init(DEFAULT_HMACSHA1_KEYSIZE);
  			SecretKey secretKey = keyGenerator.generateKey();
  			return secretKey.getEncoded();
  		} catch (GeneralSecurityException e) {
  			throw ExceptionUtil.unchecked(e);
  		}
  	}