code: def __init__(
      self,
      edge_index: Tensor,
      edge_attr: Optional[Tensor] = None,
      size: Optional[Union[int, Tuple[int, int]]] = None,
  ):
      self.edge_index = edge_index
      self.edge_attr = edge_attr
      self.size = size
  
file_path: pytorch_geometric/torch_geometric/typing.py
imports: import inspect
  import os
  import sys
  import warnings
  from typing import Any, Dict, List, Optional, Tuple, Union
  import numpy
  import torch
  from torch import Tensor
label_desc: Use image node_id 1 to create a new MockTorchCSCTensor object  with example: obj = MockTorchCSCTensor(edge_index, edge_attr, size)