This would not be more explicit. We can either define that the priorities (title, text, reason) have a higher priority (which is a clear api), or define, that always the last call wins. For example

```python
version.title = 'title'
motion.title = 'new title'
motion.use_version = version
motion.save()
```
should the version.title be used only because it is called later? I don't like this, because the user explicit said, that the title should be 'new title'.