The portable package contains interfaces and classes
that are designed for and intended to be used by an ORB
implementor. It exposes the publicly defined APIs that
are used to connect stubs and skeletons to the ORB.
The Delegate interface provides the ORB-vendor-specific
implementation of PortableServer::Servant.
This package conforms CORBA Specification V2.3.1, ptc/00-01-08.