cl: multiple work classes

[xushiwei]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 97.56098% with 1 line in your changes missing coverage. Please review.

Project coverage is 93.15%. Comparing base (d0e6af8) to head (843466b).
Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
cl/classfile.go	97.56%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2278      +/-   ##
==========================================
+ Coverage   93.11%   93.15%   +0.04%     
==========================================
  Files          34       34              
  Lines       11144    11166      +22     
==========================================
+ Hits        10377    10402      +25     
+ Misses        609      607       -2     
+ Partials      158      157       -1     

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