String xqueryFilePath = "src/main/resources/xquery/splitArticleAndCL.xqy";
    Author retval = null;
    ArrayList<String> paramNames = new ArrayList<>();
    ArrayList<String> paramValues = new ArrayList<>();
    paramNames.add("username");
    paramValues.add(neki username po zelji);
    try {
        ResourceSet queryResults = authorRepository.genericRepository.runXQuery(
                "/db/project/authors",
                xqueryFilePath, paramNames, paramValues);
        ResourceIterator i = queryResults.getIterator();
        String authorFullPath = (String)i.nextResource().getContent();
        String[] authorPathSplit = authorFullPath.split("/");
        String authorId = authorPathSplit[authorPathSplit.length - 1];
        retval = authorRepository.find(authorId); //kako god si nazvao ovu methodu
    } finally {
        return retval;
    }