javaWeb中实体类中如果一个实体是List集合，请问构造器要怎么设置呢？ 下面附代码：

public RoadMaterial(String testYear, List<Attachment> attachments, Double asphaltLayer, Double asphalMaterial, Double cementLayer, Double cementMaterial, Double recyclingRate) {
this.testYear = testYear;
this.attachments = attachments;
this.asphaltLayer = asphaltLayer;
this.asphalMaterial = asphalMaterial;
this.cementLayer = cementLayer;
this.cementMaterial = cementMaterial;
this.recyclingRate = recyclingRate;
}
红框是有问题的地方。

public Test(List<Map> list){
}List<Map> li = new ArrayList<Map>();
new Test(li);