activatable_widget
Description:
The widget to activate when the row is activated.
The row can be activated either by clicking on it, calling [method@ActionRow.activate], or via mnemonics in the title. See the [ property@PreferencesRow:use-underline] property to enable mnemonics.
The target widget will be activated by emitting the [signal@Gtk.Widget:AdwActionRow:mnemonic-activate] signal on it.