Improve caching directive to be able to be conditional to resource

[jvanecek]

No description provided.

[codecov]

Codecov Report

Merging #155 (34cf93d) into release-candidate (683620f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@                Coverage Diff                 @@
##           release-candidate     #155   +/-   ##
==================================================
  Coverage              99.77%   99.77%           
==================================================
  Files                    164      164           
  Lines                  12842    12857   +15     
==================================================
+ Hits                   12813    12828   +15     
  Misses                    29       29           

Impacted Files	Coverage Δ
...thAmericanCurrenciesRESTfulControllerTest.class.st	100.00% <100.00%> (ø)
.../SouthAmericanCurrenciesRESTfulController.class.st	100.00% <100.00%> (ø)
...-Model-Tests/CachingDirectivesBuilderTest.class.st	100.00% <100.00%> (ø)
...e/Stargate-Model/CachingDirectivesBuilder.class.st	100.00% <100.00%> (ø)
...STfulControllerRespondCreatedEntityPolicy.class.st	100.00% <100.00%> (ø)
...rgate-Model/RESTfulRequestHandlerBehavior.class.st	100.00% <100.00%> (ø)

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