@startuml
!include style.puml
skinparam arrowThickness 1.1
skinparam arrowColor MODEL_COLOR
skinparam classBackgroundColor MODEL_COLOR

package {
Class Book
Class Patron
Class BookStatus
}

Book "*" -up-> "0..3" Patron : requested by >
Book -up-> "1" BookStatus
BookStatus -up-> "0..1" Patron : borrowed by >
@enduml
