StringJoiner relativePath = new StringJoiner(SLASH_STRING);
buildHierarchyUnitPath(hierarchyUnit, relativePath);
String path = directoryPath(directory) + relativePath.toString();
StringJoiner relativePath = new StringJoiner(SLASH_STRING);
buildHierarchyUnitPath(hierarchyUnit, relativePath);
String path = directoryPath(directory) + relativePath.toString();