As documentation says, the "deactivate" command is applied to the previous message, I would like however in some cases to extend the activation beyond the last call. Here is the simplest example:
@startuml{out.png}
participant A
activate A
A -> B: Test
activate B
B -> A: Ok
deactivate B
deactivate A
@enduml
"A" starts a bit earlier on the diagram and I would like it to end a bit later than "B". Ideally I would like to just add "space" like that:
@startuml{out.png}
participant A
activate A
A -> B: Test
activate B
B -> A: Ok
deactivate B
|||
deactivate A
@enduml
Which doesn't work right now, so I use a white colored signal as a workaround (which is kinda ugly) :
@startuml{out.png}
participant A
activate A
A -> B: Test
activate B
B -> A: Ok
deactivate B
B -[#FFFFFF]->]
deactivate A
@enduml