code: def __init__(self, megatron_legacy: bool):
      self.duplicate_gpt_word_embedding_offset = 0
      self.untied_gpt_embedding = False
      self.megatron_legacy = megatron_legacy
  
imports: import os
  import shutil
  import tarfile
  import tempfile
  from argparse import ArgumentParser
  from typing import Dict, List
  import torch
  import torch.nn
  from omegaconf import OmegaConf, open_dict
  from pytorch_lightning import Trainer
  from nemo.collections.nlp.parts.nlp_overrides import NEMO_MEGATRON_MODEL_PARALLEL_APPSTATE_OVERRIDE, GradScaler, MegatronHalfPrecisionPlugin, NLPDDPStrategy, NLPSaveRestoreConnector, PipelineMixedPrecisionPlugin
  from nemo.utils import logging, model_utils
  from nemo.utils.app_state import AppState
label_desc: Use image node_id 1 to create a new GPTHandler object  with example: obj = GPTHandler(megatron_legacy)