code: def get_expert():
      return torch.nn.Linear(LATENT, LATENT, bias=False)
  
file_path: xformers/tests/test_feedforward.py
imports: import pytest
  import torch
  from xformers.components import Activation
  from xformers.components.feedforward import FEEDFORWARD_REGISTRY, build_feedforward
  from xformers.components.feedforward.mixture_of_experts import GateConfig
  from xformers.helpers.test_utils import init_torch_distributed_local
label_desc: Use image node_id 2 for calling a global function with example usage: get_expert() and returns: torch