Fix: Use helper method

[localheinz]

This PR

• removes some duplicate code and makes use of a helper method instead

Follows #1.

[codecov]

Codecov Report

Merging #4 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             master     #4   +/-   ##
=======================================
  Coverage       100%   100%           
  Complexity       18     18           
=======================================
  Files             2      2           
  Lines            71     71           
=======================================
  Hits             71     71

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