@startuml

participant ":Administrator" as Administrator
participant "inventar:Inventar" as inventar_Inventar

Administrator ---> inventar_Inventar : leihmaterialHinzufuegen(Leihmaterial)
activate Administrator
activate inventar_Inventar
inventar_Inventar ---> Administrator : boolean
deactivate Administrator
deactivate inventar_Inventar

@enduml