...

The second method has a trailing parameter of type ICEContext. This parameter is for use by the Ice run time to store information about how to deliver a request; normally, you do not need to supply a value here and can pretend that the trailing parameter does not exist. (We examine the ICEContext parameter in detail in Request Contexts. The parameter is also used by IceStorm.)

Interface Inheritance in Objective-C

Inheritance relationships among Slice interfaces are maintained in the generated Objective-C code. For example:

["objc:prefix:EX"]
module Example
{
    interface A { ... }
    interface B { ... }
    interface C extends A, B { ... }
}

The generated code reflects the inheritance hierarchy:

@interface EXCPrx : ICEObjectPrx <EXCPrx>
    ...
@end
 
@protocol EXCPrx <EXAPrx, EXBPrx>
@end

Given a proxy for C, a client can invoke any operation defined for interface C, as well as any operation inherited from C's base interfaces.

Proxy Instantiation and Casting in Objective-C

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