8 files declare their use of RenderCache in RESTful 7.2

CacheDecoratedDataProvider.php in src/Plugin/resource/DataProvider/CacheDecoratedDataProvider.php

Contains \Drupal\restful\Plugin\resource\DataProvider\CacheDecoratedDataProvider.

CacheDecoratedResource.php in src/Plugin/resource/Decorators/CacheDecoratedResource.php

Contains \Drupal\restful\Plugin\resource\Decorators\CacheDecoratedResource

Formatter.php in src/Plugin/formatter/Formatter.php

Contains \Drupal\restful\Plugin\formatter\Formatter

restful.cache.inc in ./restful.cache.inc

Procedural implementations for cache related features.

restful.entity.inc in ./restful.entity.inc

Contains entity related code.

RestfulManager.php in src/RestfulManager.php

Contains \Drupal\restful\RestfulManager.

RestfulRenderCacheTestCase.test in tests/RestfulRenderCacheTestCase.test

Contains RestfulRenderCacheTestCase

RestfulVariableTestCase.test in tests/RestfulVariableTestCase.test

Contains RestfulVariableTestCase.