def METHOD_NAME(
    self, request_options: Optional[_models.RequestOptions] = None, **kwargs: Any
) -> _models.ServiceStatistics:
    """Gets service level statistics for a search service.
    :param request_options: Parameter group. Default value is None.
    :type request_options: ~search_service_client.models.RequestOptions
    :keyword callable cls: A custom type or function that will be passed the direct response
    :return: ServiceStatistics or the result of cls(response)
    :rtype: ~search_service_client.models.ServiceStatistics
    :raises ~azure.core.exceptions.HttpResponseError:
    """
    error_map = {
        401: ClientAuthenticationError,
        404: ResourceNotFoundError,
        409: ResourceExistsError,
        304: ResourceNotModifiedError,
    }
    error_map.update(kwargs.pop("error_map", {}) or {})
    _headers = kwargs.pop("headers", {}) or {}
    _params = case_insensitive_dict(kwargs.pop("params", {}) or {})
    api_version: str = kwargs.pop("api_version", _params.pop("api-version", self._config.api_version))
    cls: ClsType[_models.ServiceStatistics] = kwargs.pop("cls", None)
    _x_ms_client_request_id = None
    if request_options is not None:
        _x_ms_client_request_id = request_options.x_ms_client_request_id
    request = build_get_service_statistics_request(
        x_ms_client_request_id=_x_ms_client_request_id,
        api_version=api_version,
        template_url=self.METHOD_NAME.metadata["url"],
        headers=_headers,
        params=_params,
    )
    request = _convert_request(request)
    path_format_arguments = {
        "endpoint": self._serialize.url("self._config.endpoint", self._config.endpoint, "str", skip_quote=True),
    }
    request.url = self._client.format_url(request.url, **path_format_arguments)
    _stream = False
    pipeline_response: PipelineResponse = self._client._pipeline.run(  # pylint: disable=protected-access
        request, stream=_stream, **kwargs
    )
    response = pipeline_response.http_response
    if response.status_code not in [200]:
        map_error(status_code=response.status_code, response=response, error_map=error_map)
        error = self._deserialize.failsafe_deserialize(_models.SearchError, pipeline_response)
        raise HttpResponseError(response=response, model=error)
    deserialized = self._deserialize("ServiceStatistics", pipeline_response)
    if cls:
        return cls(pipeline_response, deserialized, {})
    return deserialized