code: def loss_creator(config):
      return nn.MSELoss()
  
file_path: BigDL/python/chronos/src/bigdl/chronos/model/VanillaLSTM_pytorch.py
imports: import torch
  import torch.nn
  from pytorch_lightning import seed_everything
  from bigdl.chronos.pytorch.model_wrapper.normalization import NormalizeTSModel
  from bigdl.chronos.pytorch.model_wrapper.decomposition import DecompositionTSModel
label_desc: Use image node_id 3 for calling a global function with example usage: loss_creator(config) and returns: nn