This is more horrible than I had realized
Due to tragic misunderstandings at the birth of ATK, AtkUtil can't actually be properly derived. Instead, each implementation has to poke its vfuncs directly into the AtkUtilClass struct. So painful to have shipped this stuff for 10 years...
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@ -514,7 +514,11 @@ configure_event_watcher (GSignalInvocationHint *hint,
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static void
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gail_util_class_init (GailUtilClass *klass)
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{
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AtkUtilClass *atk_class = ATK_UTIL_CLASS (klass);
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AtkUtilClass *atk_class;
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gpointer data;
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data = g_type_class_peek (ATK_TYPE_UTIL);
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atk_class = ATK_UTIL_CLASS (data);
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atk_class->add_global_event_listener = gail_util_add_global_event_listener;
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atk_class->remove_global_event_listener = gail_util_remove_global_event_listener;
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