Minor refactoring: Simplifies how to group deleted tokens by extracting a method into an independent class

[jlerbsc]

No description provided.

[codecov]

Codecov Report

Merging #4134 (e9103d7) into master (7f85786) will increase coverage by 0.058%.
The diff coverage is 79.227%.

Additional details and impacted files

@@               Coverage Diff               @@
##              master     #4134       +/-   ##
===============================================
+ Coverage     57.967%   58.025%   +0.058%     
  Complexity      2331      2331               
===============================================
  Files            642       644        +2     
  Lines          34454     34488       +34     
  Branches        5966      5968        +2     
===============================================
+ Hits           19972     20012       +40     
+ Misses         12339     12334        -5     
+ Partials        2143      2142        -1     

Flag	Coverage Δ
AlsoSlowTests	58.025% <79.227%> (+0.058%)	⬆️
javaparser-core	50.469% <79.227%> (+0.085%)	⬆️
javaparser-symbol-solver	37.166% <0.000%> (-0.037%)	⬇️
jdk-10	58.014% <79.227%> (+0.058%)	⬆️
jdk-11	58.014% <79.227%> (+0.067%)	⬆️
jdk-12	58.008% <79.227%> (+0.058%)	⬆️
jdk-13	58.014% <79.227%> (+0.064%)	⬆️
jdk-14	58.011% <79.227%> (+0.055%)	⬆️
jdk-15	58.014% <79.227%> (+0.058%)	⬆️
jdk-16	57.988% <79.227%> (+0.061%)	⬆️
jdk-8	58.004% <79.227%> (+0.058%)	⬆️
jdk-9	58.014% <79.227%> (+0.058%)	⬆️
macos-latest	58.020% <79.227%> (+0.058%)	⬆️
ubuntu-latest	58.014% <79.227%> (+0.058%)	⬆️
windows-latest	58.008% <79.227%> (+0.067%)	⬆️

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Files Changed	Coverage Δ
...parser/printer/concretesyntaxmodel/CsmElement.java	96.551% <0.000%> (ø)
...aparser/printer/concretesyntaxmodel/CsmIndent.java	71.428% <0.000%> (-28.572%)	⬇️
.../printer/lexicalpreservation/ChildTextElement.java	60.000% <ø> (ø)
.../printer/lexicalpreservation/TokenTextElement.java	91.176% <ø> (ø)
...r/printer/lexicalpreservation/PeekingIterator.java	52.830% <52.830%> (ø)
...parser/printer/lexicalpreservation/Difference.java	76.411% <66.666%> (-0.004%)	⬇️
...vaparser/printer/concretesyntaxmodel/CsmToken.java	87.500% <80.000%> (+14.772%)	⬆️
...alpreservation/ReshuffledDiffElementExtractor.java	94.214% <94.214%> (ø)
.../javaparser/printer/lexicalpreservation/Added.java	68.000% <100.000%> (ø)
...xicalpreservation/LexicalDifferenceCalculator.java	75.247% <100.000%> (+0.247%)	⬆️
... and 1 more

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