MainActivity.kt

//Show here your progress
        SuperDigital.Builder(this)
                .operation(OperationAuth("sds", "dsd", "1234"))
                .enqueue(object : SuperdigitalCallback<ResponseDefault> {
                    override fun onSuccess(response: ResponseDefault) {
                        //Hide your progress
                    }

                    override fun onFailure(error: Error) {
                        //Hide your progress
                    }
                })