[Demonstration 1]

[Buggy Method]
@Override
public T visitClazz(@NotNull PoLParser.ClazzContext ctx) {
    currentClass = new JSONObject();
    try {
        currentClass.put("class-name", ctx.getText());
        currentPolicy.put("classes", currentClass);
    } catch (JSONException e) {
        throw new RuntimeException(e);
    }
    return visitChildren(ctx);
}

[Buggy Hunk]
currentPolicy.put("classes", currentClass);

[Patch]
currentClassesArray.put(currentClass);

[Demonstration 2]

[Buggy Method]
private void configureActivableColorPicker(@NotNull ColorPicker picker, @NotNull CheckBox checkbox) {
    picker.disableProperty().bind(checkbox.selectedProperty().not());
}

[Buggy Hunk]
private void configureActivableColorPicker(@NotNull ColorPicker picker, @NotNull CheckBox checkbox) {

[Patch]
private static void configureActivableColorPicker(@NotNull ColorPicker picker, @NotNull CheckBox checkbox) {

[Demonstration 3]

[Buggy Method]
public static void initialize() {
    inputQueue = new InputQueue<String>();
}

[Buggy Hunk]
inputQueue = new InputQueue<String>();

[Patch]
inputQueue = new LinkedList<String>();