Description of problem:
The example of preference has empty spec, it should include a minimal usable example, so user could actually use it.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Go to Virtualization -> Preference
2. Create preference by clicking the Create button
3.

Actual results:
The example has empty spec

Expected results:
It should include a minimal example

Additional info: