Handle null models
Handle null models


Former-commit-id: 813d8fe141ea542fe36f2b1f44c33bc1cb13b5e9
reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons