def _extract_rich_text_plain(self, rich_text: List[dict]) -> str:
        """Extract plain text from rich text objects."""
        if not rich_text:
            return ""

        text_parts = []
        for text_obj in rich_text:
            plain_text = text_obj.get("plain_text", "")
            if plain_text:
                text_parts.append(plain_text)

        return " ".join(text_parts)
Extract plain text from rich text objects.
backend/airweave/platform/sources/notion.py