(#1294) Removed unnecessary collection HeadOf

[fanifieiev]

This PR is for #1294

[0crat]

This pull request #1310 is assigned to @victornoel/z, here is why; the budget is 15 minutes, see §4; please, read §27 and when you decide to accept the changes, inform @paulodamaso/z (the architect) right in this ticket; if you decide that this PR should not be accepted ever, also inform the architect; this blog post will help you understand what is expected from a code reviewer; there will be no monetary reward for this job

[codecov-io]

Codecov Report

Merging #1310 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1310      +/-   ##
============================================
- Coverage     89.57%   89.56%   -0.02%     
+ Complexity     1671     1669       -2     
============================================
  Files           284      283       -1     
  Lines          4008     4004       -4     
  Branches        211      211              
============================================
- Hits           3590     3586       -4     
  Misses          385      385              
  Partials         33       33

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[victornoel]

@paulodamaso it's good to merge

[paulodamaso]

@rultor merge

[rultor]

@rultor merge

@paulodamaso OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@paulodamaso Done! FYI, the full log is here (took me 17min)

[0crat]

@sereshqua/z please review this job completed by @victornoel/z, as in §30; the job will be fully closed and all payments will be made when the quality review is completed

[0crat]

Payment to ARC for a closed pull request, as in §28: +10 point(s) just awarded to @paulodamaso/z

[sereshqua]

@0crat quality bad

[0crat]

Quality is low, no payment, see §31

[0crat]

Quality review completed: +4 point(s) just awarded to @sereshqua/z