change backbone to self

[HansolEom]

No need to use backbone. Calling self proceeds forward.

What does this PR do?

Fixes #<issue_number>

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[awaelchli]

Great!

[codecov]

Codecov Report

Merging #8762 (e9e09a6) into master (8473cf4) will decrease coverage by 4%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #8762    +/-   ##
=======================================
- Coverage      93%     89%    -4%     
=======================================
  Files         169     169            
  Lines       14072   14072            
=======================================
- Hits        13041   12462   -579     
- Misses       1031    1610   +579