Adding JAR files to WEB-INF/lib
In the past, you could add a JAR file to the WEB-INF/lib directory and make it available to all plugins, as well as the product itself. This no longer works, as the plugin system doesn’t know about any code in the product beyond what it’s been told to use; placing random JARs in WEB-INF/lib or class files in WEB-INF/classes will not make them available in the system bund