Customer feature request from Issue Tracker ticket# 228151:
The current mechanism for UDF (user-defined functions) is limited to having one model (FunctionDefinitions.xmi) in which UDF are defined and related to their Java implementations. This results in a configuration management problem even on just one project. For multiple projects it becomes a nightmare, unless we abandon all hope of building a body of reusable UDFs. I would therefore suggest that designer and server need to support multiple UDF definition models, identified by the extensions already defined and used for FunctionDefinitions.xmi.