Stub and skeletons
- A stub is a descriptor of a remote reference.
- There is only one stub per process, so testing if two remote reference
are the same is equivalent to the identity test of the stubs.
- A stub generator takes the class C as input an produces a stub
class which is also a subtype of the generic remote type. The stub
class implements all the methods of R as message sending.
- The stub generator produces also a skeleton which receives the
messages and dispatches the method invocations to the concrete object.
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