class LongTermMemory(ContextProvider):
    ...

    async def invoking(
        self,
        messages: ChatMessage | MutableSequence[ChatMessage],
        **kwargs: Any
    ) -> Context:
        if isinstance(messages, ChatMessage):
            messages = [messages]
        prompt = "\n".join([m.text for m in messages])

        line_sep_memories = self._get_line_sep_memories(prompt)
        ...

    def _get_line_sep_memories(self, prompt: str) -> str:
        context = self._semantic_store.get_relevant(prompt, role="user", session_tag=self._session_tag)
        line_sep_memories = "\n".join([f"* {str(m.get("content", ""))}" for m in context])
      
        return line_sep_memories