XThis is a dynamically loaded extension which extends This.java and adds
support for the generalized interface proxy mechanism introduced in
JDK1.3. XThis allows bsh scripted objects to implement arbitrary
interfaces (be arbitrary event listener types).
Note: This module relies on new features of JDK1.3 and will not compile
with JDK1.2 or lower. For those environments simply do not compile this
Eventually XThis should become simply This, but for backward compatability
we will maintain This without requiring support for the proxy mechanism.
XThis stands for "eXtended This" (I had to call it something).