def METHOD_NAME(self, uid):
    if uid == self.fw.uid:
        return self.fw
    if uid == self.fo.uid:
        return self.fo
    if uid == 'bar':
        fo = create_test_file_object()
        fo.parents = [self.fw.uid]
        fo.virtual_file_path = {self.fw.uid: ['/c']}
        return fo
    return None