@startuml
skinparam BackgroundColor F0F0F0

actor Driver
participant "System Manager" as sysmgr
participant "Dependency Graph" as graph
participant Service as srv

Driver -> sysmgr: Pass a list\nof services
sysmgr -> graph **: create

|||
sysmgr -> graph: addServices()

|||
sysmgr -> graph: topologicalSort()

|||
activate graph
graph --> sysmgr: sorted services
deactivate graph
destroy graph
|||

loop for each service in sorted services
sysmgr -> srv: Start
srv --> sysmgr: Confirmation
end
|||

@enduml