Related.java 文件源码

public static <E,Y,Y2,R, A1 extends Attribute<E,?> & Bindable<Y>, A2 extends Attribute<? super Y,?> & Bindable<Y2>>
CollectionAttribute<E, R> collection(A1 a1, A2 a2, CollectionAttribute<? super Y2,R> a3) {
    return JoiningAttribute.Constructors.collection(a1, a2, a3);
}