class_docstr: Scalar column
class_docstr_tok: ["Scalar","column"]
code: def has_data(self):
      return self._data is not Empty()
  
imports: import threading
  import copy
  from enum import Enum, auto
  from typing import List, Tuple, Union, Dict, Optional
  from collections import deque, namedtuple
label_desc: Use image node_id 4 for calling the _ScalarColumn obj's underlying member method code with example usage: obj.has_data() and returns: unknown