code: def get_key():
      return get_data_key_plaintext(
          EHSM_IP,
          EHSM_PORT,
          encrypted_primary_key_path,
          encrypted_data_key_path,
      )
  
imports: from torch.utils.data import DataLoader
  import torch
  import torch.optim
  from contextlib import nullcontext
  import torch.nn.functional
  import os
  import torch.nn
  import time
  from bigdl.nano.pytorch.patching import patch_encryption
  from bigdl.nano.pytorch.encryption import EncryptedDataset
  import logging
  from bigdl.ppml.kms.ehsm.client import generate_primary_key, generate_data_key, get_data_key_plaintext
  from datasets.load import load_from_disk
  import argparse
  from transformers import BertTokenizer, BertModel, AdamW
label_desc: Use image node_id 2 for calling a global function with example usage: get_key() and returns: get_data_key_plaintext