Type org.eclipse.emf.mapping.ecore2ecore.provider.Ecore2EcoreMappingRootItemProvider of variable ecore2EcoreMappingRootItemProvider does not match with type java.util.List<java.lang.Object> of variable owners
Make classes org.eclipse.emf.mapping.ecore2ecore.provider.Ecore2EcoreMappingRootItemProvider and java.util.List extend a common superclass
Type org.eclipse.emf.mapping.ecore2ecore.provider.Ecore2EcoreMappingRootItemProvider of variable ecore2EcoreMappingRootItemProvider does not match with type java.util.List<java.lang.Object> of variable owners