public virtual extern howler.Howl once( howler.Literals.Types.loaderror @event, howler.Howl.onceFn callback, double id);
public virtual extern howler.Howl on( howler.Literals.Types.loaderror @event, howler.Howl.onFn callback);
public virtual extern howler.Howl once( howler.Literals.Types.loaderror @event, howler.Howl.onceFn callback, double id);
public virtual extern howler.Howl on( howler.Literals.Types.loaderror @event, howler.Howl.onFn callback);