fix: interface break for 2021-12-01 api

[alexeldeib]

No description provided.

[codecov-commenter]

Codecov Report

Merging #15 (6f666f6) into main (7b622b6) will decrease coverage by 0.76%.
The diff coverage is 70.00%.

❗ Current head 6f666f6 differs from pull request most recent head 3e9da53. Consider uploading reports for the commit 3e9da53 to get more accurate results

@@            Coverage Diff             @@
##             main      #15      +/-   ##
==========================================
- Coverage   71.58%   70.81%   -0.77%     
==========================================
  Files           5        5              
  Lines         278      281       +3     
==========================================
  Hits          199      199              
- Misses         79       82       +3     

Impacted Files	Coverage Δ
wrap.go	100.00% <ø> (ø)
cache.go	62.96% <25.00%> (-1.80%)	⬇️
clients.go	80.00% <100.00%> (ø)
sku.go	74.00% <100.00%> (ø)

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