Lifetime statements activate/deactivate don't work in sequence diagram with allow_mixing

[PavelSosin]

@startuml
allow_mixing

Interface ServerCapabilities {
}
Interface ClientCapabilities {
}

Interface Initialize {

}
Interface ResourcePath {

}
Interface DidOpenedNotification {

}

Interface GoalsRequest {

}

Interface GoalsResponse {

}

Interface Goal {

}

Interface ResourceFilter {

}

Interface BuildNotification {

}

Interface BuildStatusNotification {
	
}

Actor User
Entity WSExplorer
Entity BSDplugin
Entity BSDServer

User -> WSExplorer :open
activate WSExplorer
WSExplorer -> BSDServer: start

activate BSDServer
deactivate BSDServer
deactivate WSExplorer

@enduml

[HeinrichAD]

For documentation purpose:

There are some discussions in the PlantUML Q&A Forum on this Topic.
For example: allow_mixing doesn't work with sequence diagram.

It seems the current statement from the Core Team is:

It does not really make sense to mix up sequence and class diagram.
Source: Forum comment

However, if someone finds this feature particularly useful and/or absolutely necessary, they can always participate in discussions. It is also possible to submit feature requests to the PlantUML Core team.

As a tip: Good examples and use case descriptions not only help to increase the understanding of the problem/feature request, but could also increase the interest of the core developers.

---

Also keep in mind that while the propose example above may currently not be possible the following is:

@startuml
participant Alice <<Interface>>
participant Bob <<(C,#ADD1B2) Interface>>
participant "Alice\n----\n+ call()" <<Interface>>
participant "Bob\n----\n+ response()" <<(C,#ADD1B2) Interface>>

Actor User
Entity WSExplorer
Entity BSDplugin
Entity BSDServer

User -> WSExplorer : open
activate WSExplorer
WSExplorer -> BSDServer : start
activate BSDServer
deactivate BSDServer
deactivate WSExplorer
@enduml