PreparationNoteCommand, PreparationNoteService, RoomCommand, RoomService

opp/core/src/main/java/PreparationNote.java

opp/core/src/main/java/PreparationNoteCommand.java

opp/core/src/main/java/PreparationNoteService.java

opp/core/src/main/java/Room.java

opp/core/src/main/java/RoomCommand.java

opp/core/src/main/java/RoomService.java

opp/core/target/classes/PreparationNote.class

opp/core/target/classes/Room.class