Java – JAXB / xjc parent-child navigation

I want to have two-way navigation methods in the class between the child object and the parent object

<complexType name="A">
    <xs:sequence>
        <element name="b" type="B" minOccurs="0" maxOccurs="unbounded"></element>
    </xs:sequence>
    <attribute name="id" type="ID"></attribute>
</complexType>
<complexType name="B">
    <attribute name="id" type="ID"></attribute>
</complexType>

I want the class to look like this:

class A {
    ...
    public List<B> getB() { ...}
    ...
   }
class B {
    ...
    public A getA() {
    ...
}

My XML must be as follows:

<a id="a1">
    <b id="b1"/>
    <b id="b2"/>
    ...
</a>

After dissolution, I want to be able to navigate from a to BS and from B to a (through b.geta())! This is a very basic function, but I haven't found a simple way to implement it

Any ideas??

Thank you in advance

Solution

After ungrouping, you can set the object tree as needed after calling, then call... (), and then call the object tree