def _find_docs_to_be_removed(self, doc_id: str) -> List[str]:
        """
        Finds the documents to be removed from the vector store.

        Args:
            doc_id (str): Document ID that should be removed.

        Returns:
            List[str]: List of document IDs to be removed.

        This is an abstract method and needs to be implemented in any concrete subclass.

        """

        Finds the documents to be removed from the vector store.

        Args:
            doc_id (str): Document ID that should be removed.

        Returns:
            List[str]: List of document IDs to be removed.

        This is an abstract method and needs to be implemented in any concrete subclass.

        
llama-index-integrations/vector_stores/llama-index-vector-stores-docarray/llama_index/vector_stores/docarray/base.py