ddGetObj(libName cellName) will work correct when user restart layoutPlus again ,
if cellview is not exist , it won't return value.
But , now is as below:
A user has LibA/A cell , B user has LibB/B cell and LibC/C cell
When A user open cell which references LibB/B and LibC/C , it's OK ,
But B user reomve LibB/LibC from its cds.lib
The problem is that all data are still in memory , ddGetObj(libName cellName) will return value ,