Availability Management (Documentation)

[m4444x]

Is your feature request related to a problem? Please describe.

I can't figure out if this library supports managing the available status of the registered entities or not. I see some references to this feature in the code, but it remains unclear to me how to enable the feature.

Describe the solution you'd like

A working example, which marks the entities unavailable when the script terminates, would be perfect.
Or a note about whether the feature is implemented/not implemented would be nice.