100644 blob 50ca733ef4fd052d1a2b5b4965963b0b81b48165	Book.java
100644 blob 514b07adb6e7a6f98dead234effd2deda97c0828	BookCategory.java
100644 blob d8b4d68a829054b60a3ac5721a524674eaef5725	Library.java
100644 blob 5c3ac6c9a5a45ee510b142b3e4d8b33d4624a818	LibraryFactory.java
100644 blob 4a6aa24b7684c4afa298786215cbf8094e8c6350	LibraryPackage.java
100644 blob b5a598febe7db8570a066eddb0e4b5be18cf84c9	Writer.java
040000 tree 7e16c6f60ef12ab143ed7fd1dd62595af05ccf12	impl
040000 tree 53b04f52e8daaf3e0b7ad144281c4b79222bbd3e	util