Circular references error

I'm using 2.8.5 version and I have a StructId class:

`public class StructId implements Serializable {
private static final long serialVersionUID = 1L;

public String Name;
public StructType Type;
public StructId ParentId;
public StructId ChildId;]`

I tried to solve it this way:

`private Gson gson = new GsonBuilder()
.setExclusionStrategies(new ExclusionStrategy() {

public boolean shouldSkipClass(Class clazz) {
return false; //(clazz == StructId.class);
}

/**
* Custom field exclusion goes here
*/
public boolean shouldSkipField(FieldAttributes f) {
//Ignore inner StructIds to solve circular serialization
return ( f.getName().equals("ParentId") || f.getName().equals("ChildId") );
}

})
/**
* Use serializeNulls method if you want To serialize null values
* By default, Gson does not serialize null values
*/
.serializeNulls()
.create();`

But it's not good enough, cause the ParentId/ChildId are critical and can't simply ignore them.

I saw in some posts a suggestion to enable depth of recursion... is it implemented? is there other way to come over this?

Thanks.