[ISSUE #7489] Code comment enhancement in example

[joeCarf]

Which Issue(s) This PR Fixes

Fixes #7489

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Merging #7490 (d9cf5e7) into develop (f0f15b5) will increase coverage by 0.01%.
Report is 2 commits behind head on develop.
The diff coverage is 80.00%.

@@              Coverage Diff              @@
##             develop    #7490      +/-   ##
=============================================
+ Coverage      42.93%   42.94%   +0.01%     
- Complexity      9660     9670      +10     
=============================================
  Files           1161     1161              
  Lines          83930    83933       +3     
  Branches       10898    10898              
=============================================
+ Hits           36038    36049      +11     
+ Misses         43410    43407       -3     
+ Partials        4482     4477       -5     

Files	Coverage Δ
...tmq/proxy/service/message/LocalMessageService.java	60.81% <100.00%> (ø)
...mq/proxy/service/message/LocalRemotingCommand.java	88.88% <100.00%> (+1.38%)	⬆️
...che/rocketmq/acl/plain/PlainPermissionManager.java	78.37% <0.00%> (ø)
...pache/rocketmq/remoting/protocol/LanguageCode.java	87.50% <50.00%> (-3.41%)	⬇️

... and 19 files with indirect coverage changes

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[joeCarf]

@RongtongJin hi~ PTAL