Move a using statement into the correct location for VS Code ext

[davidanthoff]

Otherwise we can't use this in the VS Code extension world.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.86%. Comparing base (550a2a4) to head (b7c76fd).
Report is 45 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #133       +/-   ##
===========================================
- Coverage   88.69%   76.86%   -11.83%     
===========================================
  Files           6        6               
  Lines        1442     1526       +84     
===========================================
- Hits         1279     1173      -106     
- Misses        163      353      +190     

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