        fetch(`//${instanceHost}/REST/ndbench/driver/getdrivers`)
                    .then(response => response.json())
                    .then(drivers => {
                        // 'Custom Script' is a "special" Driver type that is appened to the
                        // end of the list of available Drivers
                        this._drivers = drivers.sort().concat('Custom Script');
                    });
            },

            /**
             * Checks if a Driver is connected to an Instan