http://www.eclipse.org/emf/teneo/samples/emf/sample/Library BookCategoryObject Book http://www.eclipse.org/emf/teneo/samples/emf/sample/Library true org.eclipse.emf.teneo.samples.emf.sample.library.BookCategory BookCategory http://www.eclipse.org/emf/teneo/samples/emf/sample/Library Library http://www.eclipse.org/emf/teneo/samples/emf/sample/Library true true Writer http://www.eclipse.org/emf/teneo/samples/emf/sample/Library true true