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.
 
@since 1.4
@serial exclude