complete methods:

- [x] createComment
- [x] getComments
- [x] getLabels
OK, so we should try to fix this in Gush application instead of marking this as not possible.
For now we can keep this exception, but for future we properly want to get this fixed.

The first thing I can think of is adding a 'feature' interface like, DynamicLabelsAware or something like that, the issue commands can then detect if this interface is implemented and skip the validation of existence.