Provide a specify Robustness diagram type.
I know that the Robustness Diagram is not part of the UML. However StarUML already has the required components, less the diagram. Inclusion of a Robustness Diagram, along with the following capabilities would complete the feature. These features are as follows, 1. the ability to associate especially boundary and entity objects with classes, 2. the ability create these diagrams as a sub diagram of a use case.