Dynamic Invocation Interface

Using it, a client can invoke requests on any object without having compile-time knowledge of the object's interface.
How? CORBA::Object interface implements Request create_request() function.
1. Get a request pseudo-object.
2. Set argument values on it.
3. Invoke it.
The invocation can be:
- Synchronous: Block waiting for the response.
- Deferred Synchronous: The client makes the call and continues processing, later collects the response.
- Oneway Invocation: Make the request. There is no response.
Using the DII is costly (time) since the ORB usually accesses the IR.