call_change_states()
call_get_available_transitions()
call_get_states()
call_get_transition_graph()
get_node_names()
LifecycleCommand
GetVerb
ListVerb
NodesVerb
SetVerb
VerbExtension
VerbExtension.EXTENSION_POINT_VERSION
VerbExtension.NAME
VerbExtension.add_arguments()
VerbExtension.main()