Generate empty javadoc for cloud bundle fragment

[kwin]

Remove artificial public interface
This closes #3200

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 1.78%. Comparing base (b0a4f23) to head (0939f3d).
Report is 1 commits behind head on master.

❗ Current head 0939f3d differs from pull request most recent head ec55dc9. Consider uploading reports for the commit ec55dc9 to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #3272       +/-   ##
============================================
- Coverage     55.45%   1.78%   -53.68%     
+ Complexity     5506     100     -5406     
============================================
  Files           721     721               
  Lines         29534   29534               
  Branches       3840    3840               
============================================
- Hits          16378     526    -15852     
- Misses        11630   28970    +17340     
+ Partials       1526      38     -1488     

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