An expansion of a parameterized interface is treated in all respects as if it were an interface that is not parameterized.
When a parameterized interface is specified in the Repository paragraph, a new interface (an instance of a parameterized interface) is created based on the specification of the parameterized interface.
Within a run unit, two interfaces with the same externalized interface-name that are created by expanding the same parameterized interface with the same actual parameters are the same interface instance. If two interfaces expand a parameterized interface with different actual parameters, they are not the same interface instance and shall not have the same externalized interface-name.