code: def classes(self) -> Optional[Tensor]:
      if self.linear is None or self.linear.classes is None:
          return None
      return cast(Tensor, self.linear.classes).detach()
  
imports: from typing import Callable, cast, List, Optional
  import torch.nn
  from captum._utils.models.model import Model
  from torch import Tensor
  from torch.utils.data import DataLoader
label_desc: Use image node_id 7 for calling the LinearModel obj's underlying member method code with example usage: obj.classes() and returns: cast, None