Kotlin + GIZMO should be compatible

[ge0ffrey]

From #531:

@PlanningSolution
class MySolution {
    @get:PlanningEntityCollectionProperty
    var itemList: List<Item> = listOf()
    ...

I get the error

Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.IllegalStateException: Member (itemList) of class (com.acme.model.MySolution) is not public and domainAccessType is GIZMO. Maybe put the annotations onto the public getter of the field. Maybe use domainAccessType REFLECTION instead of GIZMO. [in thread "main"]

which is irritating, because the annotation is on the getter, as it explicitly has the Kotlin prefix get:.

But you're right: This isn't an issue with Gizmo itself, it originates in Timefold.
I didn't put much thought to it at the time, but instead went for the public fields approach, as it only affected a few properties in my model.
It seems that GizmoSolutionOrEntityDescriptor creates a GizmoMemberDescriptor for both the getters and the fields, and when iterating over them, it fails at the first field because Modifier.isPublic() returns false.