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java.lang.IllegalArgumentException at org.mycompany.ClassB.jdoProvideField(ClassB.java) at kodo.runtime.StateManagerImpl.provideField(StateManagerImpl.java:3244) at kodo.runtime.DetachManager$DetachFieldManager.detachField(DetachManager.java:417) at kodo.runtime.DetachManager$DetachFieldManager.detachFields(DetachManager.java:394) at kodo.runtime.DetachManager.detach(DetachManager.java:301) at kodo.runtime.DetachManager.access$100(DetachManager.java:24) at kodo.runtime.DetachManager$DetachFieldManager.detachField(DetachManager.java:605) at kodo.runtime.DetachManager$DetachFieldManager.storeObjectField(DetachManager.java:559) at kodo.runtime.StateManagerImpl.providedObjectField(StateManagerImpl.java:2031) at org.mycompany.ClassA.jdoProvideField(ClassA.java) at kodo.runtime.StateManagerImpl.provideField(StateManagerImpl.java:3244) at kodo.runtime.DetachManager$DetachFieldManager.detachField(DetachManager.java:417) at kodo.runtime.DetachManager$DetachFieldManager.detachFields(DetachManager.java:397) at kodo.runtime.DetachManager.detach(DetachManager.java:301) at kodo.runtime.DetachManager.detach(DetachManager.java:209) at kodo.runtime.PersistenceManagerImpl.detach(PersistenceManagerImpl.java:4294)