code: def get_construct_kv_cache_func(self, enable_selective_batching):
      if enable_selective_batching:
          return self.prepare_kv_cache_selective_batching
      else:
          return self.prepare_kv_cache
  
imports: import torch
  from torch import nn
  from typing import Optional, Tuple, List, Type, Dict
  from transformers import LlamaConfig
  from bigdl.llm.vllm.sequence import SequenceOutputs, SequenceGroupMetadata
  from bigdl.llm.transformers.models.utils import extend_kv_cache
  from bigdl.llm.vllm.logger import init_logger
label_desc: Use image node_id 5 for calling the BigDLModelForCausalLM obj's underlying member method code with example usage: obj.get_construct_kv_cache_func(enable_selective_batching) and returns: self, self