This package contains the classes for reading and writing extension
elements for BPEL. Any element outside of the default BPEL (1.1)
namespace is assumed to be an extension element.
The IAeExtensionElement interface provides the minimum amount
of common information likely to be shared by all readers and
writers. It is assumed that custom readers/writers that
are registered to handle specific extension elements will cast
the generic interface to the appropriate impl.
A default reader/writer class is provided to handle all
extension elements.