How can I use the sound_generator plugin for flutter

I tried it

OutlinedButton(
                onPressed: () => {
                      SoundGenerator.setFrequency(6000),
                      SoundGenerator.setVolume(1),
                      SoundGenerator.play(),
                    })

But this didn't play the sound. I search on internet but I can't find any source This is the official web site for plugin => https://pub.dev/packages/sound_generator