class_docstr: Interchange column object.
class_docstr_tok: ["Interchange","column","object","."]
docstr: Description of the null representation the column uses.
docstr_tok: ["Description","of","the","null","representation","the","column","uses","."]
code: def describe_null(self) -> tuple[ColumnNullType, Any]:
      """Description of the null representation the column uses."""
  
imports: from __future__ import annotations
  from enum import IntEnum
  from typing import TYPE_CHECKING, Any, Iterable, Literal, Protocol, Sequence, Tuple, TypedDict
label_desc: Use image node_id 5 for calling the Column obj's underlying member method code with example usage: obj.describe_null() without return types