CA2012 nowarn still exists for tests

Codecov Report

Merging #349 (ebd092a) into master (cdd6106) will not change coverage.
The diff coverage is 100.00%.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

@@           Coverage Diff           @@
##           master     #349   +/-   ##
=======================================
  Coverage   96.24%   96.24%           
=======================================
  Files          89       89           
  Lines        4975     4975           
  Branches      494      494           
=======================================
  Hits         4788     4788           
  Misses        187      187           

I did not use AsTask so as to be sure that there was no allocation occurring. But whatever you think.

Also note for SDLSorter that it is impossible to run asynchronously since it uses a static instance (cannot be derived) and the options class has no async members. (If I remember correctly.)

Excellent!