class NameTrackExtension implements TrackExtension {
    private String name;

    public static NameTrackExtension create(String name) {<FILL_FUNCTION_BODY>}

    public String getName() {
        return name;
    }
}

        NameTrackExtension nameTrackExtension = new NameTrackExtension();
        nameTrackExtension.name = name;
        return nameTrackExtension;
    
<no_super_class>