Managed Lifecycle states and transitions

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I have implemented a node lifecycle class for ros1. I am using topics to send transitions and show state. I have looked over the ros2 node lifecylce graph and the diagram and text seem to be incomplete. What happens when transition are requested that cannot be done, ignored?, report? When the OnXXX functions return not all of the true and false conditions are shown.

Has anyone looked at this and figured it all out? I have handled those transition with my own interpretation, but I would like some clarification.