public void setSampleVolume(int sample, int volume) {
public static void setSampleVolume(int sample, int volume) {
    public void setSampleVolume(int sample, int volume) {        if (sample3D == null) {            return;        } else if (sample < 0 || sample >= sample3D.length) {            return;        } else {            sample3D[sample].setVolume(volume);        }    }