This function is essentially the same as g_type_class_ref(),
except that the classes reference count isn't incremented.
As a consequence, this function may return %NULL if the class
of the type passed in does not currently exist (hasn't been
referenced before).
This function is essentially the same as g_type_class_ref(), except that the classes reference count isn't incremented. As a consequence, this function may return %NULL if the class of the type passed in does not currently exist (hasn't been referenced before).