Add missing return statements to examples

[DockedFerret800]

Recreation of original (#3020) pull requests to add return statements to examples.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.09%. Comparing base (1fc5512) to head (fb1a12c).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3021      +/-   ##
===========================================
- Coverage    93.11%   93.09%   -0.03%     
===========================================
  Files          176      176              
  Lines        13647    13647              
===========================================
- Hits         12708    12704       -4     
- Misses         939      943       +4     

see 1 file with indirect coverage changes

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