Fiori Elements EditFlow Controller Extension

The concept name is not defined in the provided sources, so a grounded definition cannot be written. The sources describe specific SAP Fiori elements extension and customization techniques — such as adding custom actions via extension points, replacing standard navigation in a table, adapting transient back-end messages, and adding custom message strips to List Report or Object Pages — but none of them define or name an overarching concept. Without a valid concept name or a source snippet that introduces and explains it, no accurate definition can be produced.