How to use the pynetbox.core.query.RequestError function in pynetbox

)
        else:
            try:
                message = "The request failed with code {} {}: {}".format(
                    req.status_code, req.reason, req.json()
                )
            except ValueError:
                message = (
                    "The request failed with code {} {} but more specific "
                    "details were not returned in json. Check the NetBox Logs "
                    "or investigate this exception's error attribute.".format(
                        req.status_code, req.reason
                    )
                )

        super(RequestError, self).__init__(message)
        self.req = req
        self.request_body = req.request.body
        self.base = req.url
        self.error = req.text

"{}secrets/get-session-key/?preserve_key=True".format(self.base),
            headers={
                "accept": "application/json",
                "authorization": "Token {}".format(self.token),
                "Content-Type": "application/x-www-form-urlencoded",
            },
            data=urlencode({"private_key": self.private_key.strip("\n")}),
            verify=self.ssl_verify,
        )
        if req.ok:
            try:
                return req.json()["session_key"]
            except json.JSONDecodeError:
                raise ContentError(req)
        else:
            raise RequestError(req)

:Raises: RequestError if req.ok returns false.
        :Returns: Version number as a string. Empty string if version is not
        present in the headers.
        """
        headers = {
            "Content-Type": "application/json;",
        }
        req = requests.get(
            self.normalize_url(self.base),
            headers=headers,
            verify=self.ssl_verify,
        )
        if req.ok:
            return req.headers.get("API-Version", "")
        else:
            raise RequestError(req)

)

        if req.status_code == 204 and verb == "post":
            raise AllocationError(req)
        if verb == "delete":
            if req.ok:
                return True
            else:
                raise RequestError(req)
        elif req.ok:
            try:
                return req.json()
            except json.JSONDecodeError:
                raise ContentError(req)
        else:
            raise RequestError(req)