snippet locale copy command

__Tasks:__

- [x] test coverage
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | yes
| Fixed tickets | none
| BC Breaks     | none
| Doc           | none
As discussed can we change it to the ContentMaperRequest. We should do either one thing or the other and the `save` method is marked as deprecated in anycase.