code: def format_oasst_llama(
      messages: List[llama_types.ChatCompletionRequestMessage],
      **kwargs: Any,
  ) -> ChatFormatterResponse:
      _system_template = (
          "[INST] <<SYS>>\n{system_message}\n<</SYS>>\n\n"
      )
      _roles = dict(user="<|prompter|>", assistant="<|assistant|>")
      _sep = "</s>"
      system_message = _get_system_message(messages)
      system_message = _system_template.format(
          system_message=system_message
      )
      _messages = _map_roles(messages, _roles)
      _messages.append((_roles["assistant"], None))
      _prompt = _format_no_colon_single(system_message, _messages, _sep)
      return ChatFormatterResponse(prompt=_prompt)
  
imports: from __future__ import annotations
  import os
  import json
  import ctypes
  import dataclasses
  from typing import Any, Dict, Iterator, List, Optional, Tuple, Union, Protocol
  import llama_cpp.llama
  import llama_cpp.llama_types
  import llama_cpp.llama_grammar
  from ._utils import suppress_stdout_stderr
label_desc: Use image node_id 22 for calling a global function with example usage: format_oasst_llama(messages) and returns: ChatFormatterResponse