updateButtonsState
⚠️ Deprecated ⚠️
This is deprecated since version 4.10.
This widget will be removed in GTK 5
---Forces @assistant to recompute the buttons state.
GTK automatically takes care of this in most situations, e.g. when the user goes to a different page, or when the visibility or completeness of a page changes.
One situation where it can be necessary to call this function is when changing a value on the current page affects the future page flow of the assistant.