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java.lang.NullPointerException: 	at org.eclipse.emf.edapt.history.reconstruction.EcoreForwardReconstructor$EcoreReconstructorSwitch.caseCreate(EcoreForwardReconstructor.java:124)	at org.eclipse.emf.edapt.spi.history.util.HistorySwitch.doSwitch(HistorySwitch.java:218)	at org.eclipse.emf.edapt.spi.history.util.HistorySwitch.doSwitch(HistorySwitch.java:104)	at org.eclipse.emf.edapt.spi.history.util.HistorySwitch.doSwitch(HistorySwitch.java:90)	at org.eclipse.emf.edapt.history.reconstruction.EcoreForwardReconstructor.startChange(EcoreForwardReconstructor.java:71)	at org.eclipse.emf.edapt.history.reconstruction.ForwardReconstructorBase.doReconstruct(ForwardReconstructorBase.java:97)	at org.eclipse.emf.edapt.history.reconstruction.ForwardReconstructorBase.doReconstruct(ForwardReconstructorBase.java:102)	at org.eclipse.emf.edapt.history.reconstruction.ForwardReconstructorBase.doReconstruct(ForwardReconstructorBase.java:78)	at org.eclipse.emf.edapt.history.reconstruction.ForwardReconstructorBase.doReconstruct(ForwardReconstructorBase.java:57)	at org.eclipse.emf.edapt.history.reconstruction.CompositeReconstructorBase.reconstruct(CompositeReconstructorBase.java:74)	at org.eclipse.emf.edapt.migration.execution.Migrator.migrate(Migrator.java:244)	at org.eclipse.emf.edapt.migration.execution.Migrator.migrateAndLoad(Migrator.java:196)	at MinimalExample.main(MinimalExample.java:89)