chore: polish docs and comments

[tangcent]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.008%. Comparing base (abcaae1) to head (76706a7).

Additional details and impacted files

@@             Coverage Diff             @@
##              master     #1118   +/-   ##
===========================================
  Coverage     62.008%   62.008%           
  Complexity      2285      2285           
===========================================
  Files            249       249           
  Lines          12100     12100           
  Branches        2984      2984           
===========================================
  Hits            7503      7503           
  Misses          3000      3000           
  Partials        1597      1597           

Flag	Coverage Δ
unittests	62.008% <100.000%> (ø)

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Files	Coverage Δ
...ngcent/idea/plugin/api/DefaultMethodInferHelper.kt	42.075% <100.000%> (ø)

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