' State diagram for Thing Status Concept
@startuml
skinparam state {
  BackgroundColor White
  BorderColor Grey
  ArrowColor #01324D
  StartColor #01324D
  EndColor #01324D
}
[*] -up-> UNINITIALIZED
UNINITIALIZED -right-> INITIALIZING
INITIALIZING -left-> UNINITIALIZED
INITIALIZING -right-> initialized

state initialized {
 ONLINE -right-> OFFLINE
 ONLINE --> UNKNOWN
 OFFLINE -left-> ONLINE
 OFFLINE --> UNKNOWN
 UNKNOWN --> ONLINE
 UNKNOWN --> OFFLINE
}

initialized -left-> UNINITIALIZED

state removal {
 [*] --> REMOVING
 REMOVING --> REMOVED
 REMOVED --> [*]  
}
@enduml