code: public static Map<String, Object> convertMutationTokenToMap(MutationToken mutationToken) {
      Map<String, Object> result = null;
      if (mutationToken != null) {
        result = new HashMap<String, Object>();
        result.put("vbucketID", mutationToken.vbucketID());
        result.put("vbucketUUID", mutationToken.vbucketUUID());
        result.put("sequenceNumber", mutationToken.sequenceNumber());
        result.put("bucket", mutationToken.bucket());
      }
      return result;
    }
docs: Converts a {@link MutationToken} into a {@link Map} so that it can be
  {@link Stream}-ed and returned by the procedures
  
  @param mutationToken
  the mutation token to convert
  @return the converted mutation token in the form of a Map