AIA XSL and Xpath functions in jDeveloper

Using Oracle Application Integration Architecture, you can use some custom xpath and xsl functions that are created for the Oracle AIA foundation package.
To use them it is convenient to have them available in the expression builder of jDeveloper.
To enable this lookup note 550378.1 in metalink. There you can download a zip that has the aia.jar and a setup script to copy that to the right place in your jdeveloper home and register it.