chore: change utility script to snake_case method.

[stevenhua0320]

@sbillinge ready to review. Note that this is the utility script that I mentioned before. So we only changed the CamelCase method to snake_case ones.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.17%. Comparing base (9751d1e) to head (991889b).
⚠️ Report is 6 commits behind head on v3.4.0.

Additional details and impacted files

@@            Coverage Diff             @@
##           v3.4.0     #182      +/-   ##
==========================================
- Coverage   99.18%   99.17%   -0.01%     
==========================================
  Files          15       15              
  Lines        2450     2439      -11     
==========================================
- Hits         2430     2419      -11     
  Misses         20       20              

see 1 file with indirect coverage changes

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