lastKnownFileType = "wrapper.wo";
lastKnownFileType = "folder";
  protected Map newFolderReference(String _name, String _path) {    String lastKnownFileType;    if (_path.endsWith(".eomodeld")) {      lastKnownFileType = "wrapper.eomodeld";    }    else if (_path.endsWith(".wo")) {      lastKnownFileType = "wrapper.wo";    }    else if (_path.endsWith(".nib")) {      lastKnownFileType = "wrapper.nib";    }    else {      lastKnownFileType = "folder";    }    Map result = map(new Object[] { "isa", "PBXFileReference", "lastKnownFileType", lastKnownFileType, "path", _path, "sourceTree", new File(_path).isAbsolute() ? "<absolute>" : "<group>" });    return result;  }