@startuml

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

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sysmgr -> graph: addServices()

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sysmgr -> graph: topologicalSort()

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activate graph
graph --> sysmgr: sorted services
deactivate graph
destroy graph
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loop for each service in sorted services
sysmgr -> srv: Start
srv --> sysmgr: Confirmation
end
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@enduml