def METHOD_NAME(self, query: str, documents: List[Document], top_k: Optional[int] = None) -> List[Document]:
    """
    Rank the documents based on their diversity and return the top_k documents.
    :param query: The query.
    :param documents: A list of Document objects that should be ranked.
    :param top_k: The maximum number of documents to return.
    :return: A list of top_k documents ranked based on diversity.
    """
    if query is None or len(query) == 0:
        raise ValueError("Query is empty")
    if documents is None or len(documents) == 0:
        raise ValueError("No documents to choose from")
    top_k = top_k or self.top_k
    diversity_sorted = self.greedy_diversity_order(query=query, documents=documents)
    return diversity_sorted[:top_k]