code: def enable_llama_pos_shift_attention(model):
      for name, module in reversed(model._modules.items()):
          if len(list(module.children())) > 0:
              enable_llama_pos_shift_attention(
                  module,
              )
  
          if isinstance(module, LlamaAttention):
              model._modules[name].forward = types.MethodType(
                  llama_pos_shift_attention_forward,
                  model._modules[name],
              )
  
file_path: BigDL/python/llm/example/CPU/Applications/streaming-llm/streaming_llm/modify_llama.py
imports: import math
  from typing import Optional, Tuple
  import torch
  from torch import nn
  import torch.utils.checkpoint
  import torch.nn.functional
  from transformers.models.llama.modeling_llama import LlamaAttention, rotate_half, apply_rotary_pos_emb, repeat_kv
  import types
label_desc: Use image node_id 3 for calling a global function with example usage: enable_llama_pos_shift_attention(model) without return types