| AddOrOverwrite | add new mpn package data |
| Dispose | remove resources and clear lists |
| GetAllMPNPackages | get a list with all mpn package data in this instance. |
| GetMPNPackage | find mpn in package list and get it (or null if not available) |
| GetOrCreatePackage | add the new package, maybe change the mpn with _counter |
| Remove | remove single mpn from the package list. |
| Save | save the package list as xml in misc directory |
| GetPropValue | (Defined by ExtensionsMethods) |