Not able to access OnDownloadListener Interface in kotlin

[rmbhati]

JAVA code

.start(new OnDownloadListener() {
@OverRide
public void onDownloadComplete() {
buttonOne.setEnabled(false);
buttonCancelOne.setEnabled(false);
buttonOne.setText(R.string.completed);
}

                        @Override
                        public void onError(Error error) {
                            buttonOne.setText(R.string.start);
                            Toast.makeText(getApplicationContext(), getString(R.string.some_error_occurred) + " " + "1", Toast.LENGTH_SHORT).show();
                            textViewProgressOne.setText("");
                            progressBarOne.setProgress(0);
                            downloadIdOne = 0;
                            buttonCancelOne.setEnabled(false);
                            progressBarOne.setIndeterminate(false);
                            buttonOne.setEnabled(true);
                        }
                    });

Kotlin
In kotlin i am not able to access

.start(listner OnDownloadListener)

[HariAgus]

.build()
.start(object : OnDownloadListener {

}

Try use like that's