feat: add param attribute (#82)(#81)

[pei0804]

close #82
close #81

[codecov-io]

Codecov Report

Merging #86 into master will decrease coverage by 1.11%.
The diff coverage is 78.08%.

@@            Coverage Diff             @@
##           master      #86      +/-   ##
==========================================
- Coverage   86.91%   85.79%   -1.12%     
==========================================
  Files           5        5              
  Lines         657      718      +61     
==========================================
+ Hits          571      616      +45     
- Misses         54       62       +8     
- Partials       32       40       +8

Impacted Files	Coverage Δ
operation.go	91.05% <78.08%> (-4.19%)	⬇️

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[easonlin404]

LGTM