def _parse_filters(self, filters: Optional[MetadataFilters]) -> tablestore.Query:
        """Parse MetadataFilters to equivalent OpenSearch expression."""
        if filters is None:
            return tablestore.MatchAllQuery()
        return self._parse_filters_recursively(filters=filters)
Parse MetadataFilters to equivalent OpenSearch expression.
llama-index-integrations/vector_stores/llama-index-vector-stores-tablestore/llama_index/vector_stores/tablestore/base.py