String (@NotNull String path) { if (path.isEmpty()) { return PATH_DELIMITER; } boolean prepend = !path.startsWith(PATH_DELIMITER); boolean append = !path.endsWith(PATH_DELIMITER); if (prepend && append) { return PATH_DELIMITER + path + PATH_DELIMITER; } if (prepend) { path = PATH_DELIMITER + path; } if (append) { path += PATH_DELIMITER; } return path; }