12 files declare their use of ResourceFieldInterface in RESTful 7.2

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

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

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

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

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

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

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

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

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

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

DataProviderTaxonomyTerm.php in tests/modules/restful_test/src/Plugin/resource/taxonomy_term/v1/DataProviderTaxonomyTerm.php

Contains \Drupal\restful_test\Plugin\resource\taxonomy_term\v1\DataProviderTaxonomyTerm.

FormatterHalJson.php in src/Plugin/formatter/FormatterHalJson.php

Contains \Drupal\restful\Plugin\formatter\FormatterHalJson.

FormatterInterface.php in src/Plugin/formatter/FormatterInterface.php

Contains \Drupal\restful\Plugin\formatter\FormatterInterface

FormatterJson.php in src/Plugin/formatter/FormatterJson.php

Contains \Drupal\restful\Plugin\formatter\FormatterJson.

FormatterJsonApi.php in src/Plugin/formatter/FormatterJsonApi.php

Contains \Drupal\restful\Plugin\formatter\FormatterJsonApi.

Tags__1_0.php in modules/restful_example/src/Plugin/resource/Tags__1_0.php

Contains \Drupal\restful_example\Plugin\resource\Tags__1_0.

TestArticles__1_0.php in tests/modules/restful_test/src/Plugin/resource/node/test_article/v1/TestArticles__1_0.php

Contains \Drupal\restful_test\Plugin\resource\node\test_article\v1\TestArticles__1_0.