Modeling Visual Basic interface implementation in a model (Visual Basic code)
Interface implementation is modeled through a Modeler Dependency of type Interface Realization.
To model Visual Basic interface implementation in a model:
1. On a Class Diagram, add the Interface from which the interface is generated, and add the Class or Data Type from which the class or structure that implements the interface is generated.
2. On the Class Diagram tab, click the 
Abstraction button, click the Class or Data Type, and then click the Interface.
Abstraction button, click the Class or Data Type, and then click the Interface.Modeler sets the Type of the Dependency to Interface Realization.