Interface org.jabref.gui.importer.actions.GUIPostOpenAction
https://github.com/JabRef/jabref/blob/master/src/main/java/org/jabref/gui/importer/actions/GUIPostOpenAction.java#L6This interface defines potential actions that may need to be taken after opening a BIB file into JabRef. This can for instance be file upgrade actions that should be offered due to new features in JabRef, and may depend on e.g. which JabRef version the file was last written by. This interface is introduced in an attempt to add such functionality in a flexible manner.