How to use the restless.http.JSONErrorResponse function in restless

def __init__(self, typ='basic', realm="api"):
        super(Http401, self).__init__()
        if typ == 'basic':
            self['WWW-Authenticate'] = 'Basic realm="%s"' % realm
        else:
            assert False, 'Invalid type ' + str(typ)
            self.status_code = 403


class Http403(JSONErrorResponse, http.HttpResponseForbidden):
    """HTTP 403 FORBIDDEN"""
    pass


class Http404(JSONErrorResponse):
    """HTTP 404 Not Found"""
    status_code = 404


class Http409(JSONErrorResponse):
    """HTTP 409 Conflict"""
    status_code = 409


class Http500(JSONErrorResponse):
    """HTTP 500 Internal Server Error"""
    status_code = 500


class HttpError(Exception):
    """Exception that results in returning a JSONErrorResponse to the user."""

def __init__(self, code, reason, **additional_data):
        super(HttpError, self).__init__(self, reason)
        self.response = JSONErrorResponse(reason, **additional_data)
        self.response.status_code = code

def __init__(self, reason, **additional_data):
        """
        Create a new JSONErrorResponse with the provided error reason (string)
        and the optional additional data (will be added to the resulting
        JSON object).
        """
        resp = {'error': reason}
        resp.update(additional_data)
        super(JSONErrorResponse, self).__init__(resp)

resp = {'error': reason}
        resp.update(additional_data)
        super(JSONErrorResponse, self).__init__(resp)


class Http200(JSONResponse):
    """HTTP 200 OK"""
    pass


class Http201(JSONResponse):
    """HTTP 201 CREATED"""
    status_code = 201


class Http400(JSONErrorResponse, http.HttpResponseBadRequest):
    """HTTP 400 Bad Request"""
    pass


class Http401(http.HttpResponse):
    """HTTP 401 UNAUTHENTICATED"""
    status_code = 401

    def __init__(self, typ='basic', realm="api"):
        super(Http401, self).__init__()
        if typ == 'basic':
            self['WWW-Authenticate'] = 'Basic realm="%s"' % realm
        else:
            assert False, 'Invalid type ' + str(typ)
            self.status_code = 403

else:
            assert False, 'Invalid type ' + str(typ)
            self.status_code = 403


class Http403(JSONErrorResponse, http.HttpResponseForbidden):
    """HTTP 403 FORBIDDEN"""
    pass


class Http404(JSONErrorResponse):
    """HTTP 404 Not Found"""
    status_code = 404


class Http409(JSONErrorResponse):
    """HTTP 409 Conflict"""
    status_code = 409


class Http500(JSONErrorResponse):
    """HTTP 500 Internal Server Error"""
    status_code = 500


class HttpError(Exception):
    """Exception that results in returning a JSONErrorResponse to the user."""

    def __init__(self, code, reason, **additional_data):
        super(HttpError, self).__init__(self, reason)
        self.response = JSONErrorResponse(reason, **additional_data)
        self.response.status_code = code

class Http403(JSONErrorResponse, http.HttpResponseForbidden):
    """HTTP 403 FORBIDDEN"""
    pass


class Http404(JSONErrorResponse):
    """HTTP 404 Not Found"""
    status_code = 404


class Http409(JSONErrorResponse):
    """HTTP 409 Conflict"""
    status_code = 409


class Http500(JSONErrorResponse):
    """HTTP 500 Internal Server Error"""
    status_code = 500


class HttpError(Exception):
    """Exception that results in returning a JSONErrorResponse to the user."""

    def __init__(self, code, reason, **additional_data):
        super(HttpError, self).__init__(self, reason)
        self.response = JSONErrorResponse(reason, **additional_data)
        self.response.status_code = code

class Http401(http.HttpResponse):
    """HTTP 401 UNAUTHENTICATED"""
    status_code = 401

    def __init__(self, typ='basic', realm="api"):
        super(Http401, self).__init__()
        if typ == 'basic':
            self['WWW-Authenticate'] = 'Basic realm="%s"' % realm
        else:
            assert False, 'Invalid type ' + str(typ)
            self.status_code = 403


class Http403(JSONErrorResponse, http.HttpResponseForbidden):
    """HTTP 403 FORBIDDEN"""
    pass


class Http404(JSONErrorResponse):
    """HTTP 404 Not Found"""
    status_code = 404


class Http409(JSONErrorResponse):
    """HTTP 409 Conflict"""
    status_code = 409


class Http500(JSONErrorResponse):
    """HTTP 500 Internal Server Error"""