c_g_option_group_set_translate_func

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
void function(GOptionGroup* group, GTranslateFunc func, void* data, GDestroyNotify destroyNotify) c_g_option_group_set_translate_func;

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