docstr: keep network in evaluation mode.
docstr_tok: ["keep","network","in","evaluation","mode","."]
code: def train(self, mode: bool = True) -> "MockBackbone":
      """keep network in evaluation mode."""
      return super().train(False)
  
file_path: NeuralCompression/tests/conftest.py
imports: import pytest
  import torch
  import torch.nn
  from torch import Tensor
label_desc: Use image node_id 2 for calling the MockBackbone obj's underlying member method code with example usage: obj.train(mode) and returns: super