def _safe_float_conversion(self, value: Any) -> Optional[float]:
        """Safely convert a value to float, handling empty strings and None."""
        if not value or value == "":
            return None
        try:
            return float(value)
        except (ValueError, TypeError):
            return None
Safely convert a value to float, handling empty strings and None.
backend/airweave/platform/sources/hubspot.py