code: def convert(cls, model, tokenizer, ggml_type, save_path):
      # convert all weights to fp16
      with open(save_path, "wb") as f:
          f.write(b"ggml")  # magic
          f.write(
              struct.pack("ii", cls.MODEL_TYPE.value, 1)
          )  # model type & version
          cls.dump_config(f, model.config, ggml_type)
          cls.dump_tokenizer(f, tokenizer)
          cls.dump_model(f, model, ggml_type)
  
      print(f"{cls.MODEL_TYPE.name} GGML model saved to {save_path}")
      return save_path
  
imports: import argparse
  import platform
  import struct
  import sys
  from enum import Enum
  from pathlib import Path
  import torch
  from tabulate import tabulate
  from tqdm import tqdm
  from transformers import AutoModel, AutoTokenizer
  from bigdl.llm.utils.common import invalidInputError
label_desc: Use image node_id 1 for calling the BaseConverter obj's underlying member method code with example usage: obj.convert(cls, model, tokenizer, ggml_type, save_path) and returns: save_path