Protect internals

[Baptouuuu]

This should help future maintenance

[codecov]

Codecov Report

Attention: Patch coverage is 94.28571% with 2 lines in your changes missing coverage. Please review.

Project coverage is 97.25%. Comparing base (60f2cda) to head (0cb2a56).
Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/Servers/Unix.php	0.00%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop      #19      +/-   ##
=============================================
+ Coverage      97.22%   97.25%   +0.03%     
- Complexity       312      313       +1     
=============================================
  Files             58       58              
  Lines           2089     2080       -9     
=============================================
- Hits            2031     2023       -8     
+ Misses            58       57       -1     

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