Refactor #162

[koriym]

The nesting of if was not easy to read, so I created a method.

See 66333fa

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (3.x@a4fd8dc). Click here to learn what that means.
The diff coverage is n/a.

@@          Coverage Diff           @@
##             3.x     #198   +/-   ##
======================================
  Coverage       ?   99.87%           
  Complexity     ?      279           
======================================
  Files          ?       34           
  Lines          ?      809           
  Branches       ?        0           
======================================
  Hits           ?      808           
  Misses         ?        1           
  Partials       ?        0           

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[harikt]

Thank you @koriym .