@startuml
!include <material/package_variant_closed>

left to right direction
skinparam defaultTextAlignment center

rectangle "<$ma_package_variant_closed>\nPack" as block #Salmon

interface " " as q1
interface " " as q2
interface " " as q3

q1 --> block: input
q2 -u-> block: release
block --> q3: output
@enduml
