return filterTask;},ready(){return new Promise(function(resolve,reject){const graph=this.createFilterTaskGraph_();graph.lastTask=graph.lastTask.after(function(){resolve(this.selection_);},this);tr.b.Task.RunWhenIdle(graph.rootTask);}.bind(this));},get selection(){if(this.selection_===undefined){const graph=this.createFilterTaskGraph_();tr.b.Task.RunSynchronously(graph.rootTask);}