ClassFinalizeFunc
A callback function used by the type system to finalize a class.
This function is rarely needed, as dynamically allocated class resources should be handled by GBaseInitFunc() and GBaseFinalizeFunc().
Also, specification of a GClassFinalizeFunc() in the #GTypeInfo structure of a static type is invalid, because classes of static types will never be finalized (they are artificially kept alive when their reference count drops to zero).
param
gClass
The #GTypeClass structure to finalizeparam
classData
The @class_data member supplied via the #GTypeInfo structure