def request_encode_url(
        self,
        method: str,
        url: str,
        fields: _TYPE_ENCODE_URL_FIELDS | None = None,
        headers: typing.Mapping[str, str] | None = None,
        **urlopen_kw: str,
    ) -> BaseHTTPResponse:
        """
        Make a request using :meth:`urlopen` with the ``fields`` encoded in
        the url. This is useful for request methods like GET, HEAD, DELETE, etc.

        :param method:
            HTTP request method (such as GET, POST, PUT, etc.)

        :param url:
            The URL to perform the request on.

        :param fields:
            Data to encode and send in the URL.

        :param headers:
            Dictionary of custom headers to send, such as User-Agent,
            If-None-Match, etc. If None, pool headers are used. If provided,
            these headers completely replace any pool-specific headers.
        """
        if headers is None:
            headers = self.headers

        extra_kw: dict[str, typing.Any] = {"headers": headers}
        extra_kw.update(urlopen_kw)

        if fields:
            url += "?" + urlencode(fields)

        return self.urlopen(method, url, **extra_kw)

        Make a request using :meth:`urlopen` with the ``fields`` encoded in
        the url. This is useful for request methods like GET, HEAD, DELETE, etc.

        :param method:
            HTTP request method (such as GET, POST, PUT, etc.)

        :param url:
            The URL to perform the request on.

        :param fields:
            Data to encode and send in the URL.

        :param headers:
            Dictionary of custom headers to send, such as User-Agent,
            If-None-Match, etc. If None, pool headers are used. If provided,
            these headers completely replace any pool-specific headers.
        
src/urllib3/_request_methods.py