protected void cancel(){
  clearImages();
  if (callbacks != null) {
    for (    GuidedTourLifeCycle guidedTourLifeCycle : callbacks) {
      guidedTourLifeCycle.end();
    }
  }
}

protected void cancel ( ) { clearImages ( ) ; if ( callbacks != null ) { for ( GuidedTourLifeCycle guidedTourLifeCycle : callbacks ) { guidedTourLifeCycle . end ( ) ; } } }
callback when tour is being cancelled
