use computeIfAbsent to set the default consumers

[mimfgg]

I think that maybe using computeIfAbsent leads to a nicer result, what do you think?

(I also removed the split on | ... this is very specific to your inBounds example and can as well be done in the consumer)

[codecov-commenter]

Codecov Report

Merging #129 (007cd00) into ft/customFlags (b673f69) will decrease coverage by 0.34%.
The diff coverage is 84.37%.

@@                 Coverage Diff                  @@
##             ft/customFlags     #129      +/-   ##
====================================================
- Coverage             86.30%   85.96%   -0.35%     
  Complexity               35       35              
====================================================
  Files                    31       31              
  Lines                  2571     2551      -20     
  Branches                281      279       -2     
====================================================
- Hits                   2219     2193      -26     
- Misses                  236      242       +6     
  Partials                116      116              

Impacted Files	Coverage Δ
...ain/java/com/decathlon/tzatziki/utils/Asserts.java	90.04% <84.37%> (-3.03%)	⬇️
.../main/java/com/decathlon/tzatziki/utils/Types.java	61.70% <0.00%> (-2.13%)	⬇️
...a/com/decathlon/tzatziki/steps/SpringJPASteps.java	77.60% <0.00%> (ø)

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[brian-mulier]

👍 As discussed my goal was to give the consumer a simple arg-to-consume basis but it will probably lead to issues later on so better not to parse the args and let this responsibility to the consumer