code: def batch_type(self) -> Type[CausalLMBatch]:
      return CausalLMBatch
  
imports: import torch
  import time
  from dataclasses import dataclass
  from opentelemetry import trace
  from transformers import AutoTokenizer, AutoModelForCausalLM, PreTrainedTokenizerBase
  from typing import Optional, Tuple, List, Type, Dict
  from text_generation_server.models import Model
  from text_generation_server.utils.tokens import batch_top_tokens
  from text_generation_server.models.types import Batch, Tokens, Generation, GeneratedText
  from text_generation_server.pb import generate_pb2
  from text_generation_server.utils import NextTokenChooser, StoppingCriteria, Sampling
label_desc: Use image node_id 2 for calling the CausalLM obj's underlying member method code with example usage: obj.batch_type() and returns: CausalLMBatch