How to use the azure-cognitiveservices-vision-face.azure.cognitiveservices.vision.face.models.FindSimilarRequest function in azure-cognitiveservices-vision-face

:param mode: Similar face searching mode. It can be "matchPerson" or
         "matchFace". Possible values include: 'matchPerson', 'matchFace'
        :type mode: str or
         ~azure.cognitiveservices.vision.face.models.FindSimilarMatchMode
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides`.
        :return: list or ClientRawResponse if raw=true
        :rtype: list[~azure.cognitiveservices.vision.face.models.SimilarFace]
         or ~msrest.pipeline.ClientRawResponse
        :raises:
         :class:`APIErrorException`
        """
        body = models.FindSimilarRequest(face_id=face_id, face_list_id=face_list_id, large_face_list_id=large_face_list_id, face_ids=face_ids, max_num_of_candidates_returned=max_num_of_candidates_returned, mode=mode)

        # Construct URL
        url = self.find_similar.metadata['url']
        path_format_arguments = {
            'Endpoint': self._serialize.url("self.config.endpoint", self.config.endpoint, 'str', skip_quote=True)
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}

        # Construct headers
        header_parameters = {}
        header_parameters['Accept'] = 'application/json'
        header_parameters['Content-Type'] = 'application/json; charset=utf-8'
        if custom_headers: