code: def get_mock_input(cls) -> TileableData:
      return cls._mock_input
  
imports: from typing import Dict, Any, Set, List, Union
  import pytest
  from ..input_column_selector import InputColumnSelector
  from ......core import TileableData, ENTITY_TYPE
  from ......core.operand import Operand
  from ......dataframe import DataFrame, Series
  from ......tensor import tensor
label_desc: Use image node_id 2 for calling the MockOperand obj's underlying member method code with example usage: obj.get_mock_input(cls) and returns: cls