public void addCrumb(@NonNull Breadcrumb crumb,boolean setSelected){
  addCrumb(crumb,crumbs.size(),setSelected);
}

public void addCrumb ( @ NonNull Breadcrumb crumb , boolean setSelected ) { addCrumb ( crumb , crumbs . size ( ) , setSelected ) ; }
add a crumb to this layout . the crumb will be added at the end of the list .
