c_gtk_action_group_add_action_with_accel

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(GtkActionGroup* actionGroup, GtkAction* action, const(char)* accelerator) c_gtk_action_group_add_action_with_accel;

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