public unowned TypeClass? peek_parent ()
This is a convenience function often needed in class initializers.
It returns the class structure of the immediate parent type of the class passed in. Since derived classes hold a reference count on their parent classes as long as they are instantiated, the returned class will always exist.
This function is essentially equivalent to: g_type_class_peek (g_type_parent (G_TYPE_FROM_CLASS (g_class)))
the TypeClass structure to retrieve the parent class for
the parent class of this