Fix pyright complaint

[toondaey]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.88%. Comparing base (753a751) to head (b2905cd).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
cognite/extractorutils/unstable/core/base.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #456   +/-   ##
=======================================
  Coverage   78.88%   78.88%           
=======================================
  Files          42       42           
  Lines        3647     3647           
=======================================
  Hits         2877     2877           
  Misses        770      770           

Files with missing lines	Coverage Δ
cognite/extractorutils/unstable/core/base.py	77.09% <50.00%> (ø)

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[einarmo]

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