async def _aget(
        self, messages: Optional[List[ChatMessage]] = None, **block_kwargs: Any
    ) -> str:
        """Return the current facts as formatted text."""
        if not self.facts:
            return ""

        return "\n".join([f"<fact>{fact}</fact>" for fact in self.facts])
Return the current facts as formatted text.
llama-index-core/llama_index/core/memory/memory_blocks/fact.py