def find_similar(
        self,
        url: str,
        num_results: Optional[int] = 3,
        start_published_date: Optional[str] = None,
        end_published_date: Optional[str] = None,
    ) -> str:
        """
        Retrieve a list of similar documents to a given url.

        Args:
            url (str): The web page to find similar results of
            num_results (Optional[int]): Number of results to return. Default 3.
            start_published_date (Optional[str]): A date string like "2020-06-15"
            end_published_date (Optional[str]): End date string

        """
        response = self.client.find_similar(
            url,
            num_results=num_results,
            start_published_date=start_published_date,
            end_published_date=end_published_date,
        )
        return [
            {"title": result.title, "url": result.url, "id": result.id}
            for result in response.results
        ]

        Retrieve a list of similar documents to a given url.

        Args:
            url (str): The web page to find similar results of
            num_results (Optional[int]): Number of results to return. Default 3.
            start_published_date (Optional[str]): A date string like "2020-06-15"
            end_published_date (Optional[str]): End date string

        
llama-index-integrations/tools/llama-index-tools-metaphor/llama_index/tools/metaphor/base.py