11 files declare their use of Storage in Acquia Search 3.x

AcquiaSearchApiClientTest.php in tests/src/Unit/AcquiaSearchApiClientTest.php

AcquiaSearchCommands.php in src/Commands/AcquiaSearchCommands.php

AcquiaSearchCommandsTest.php in tests/src/Unit/Commands/AcquiaSearchCommandsTest.php

acquia_search.install in ./acquia_search.install

Install, update, and uninstall functions for the Acquia Search Solr module.

acquia_search.post_update.php in ./acquia_search.post_update.php

Search Solr updates once other modules have made their own updates.

PreferredSearchCore.php in src/PreferredSearchCore.php

PreferredSearchCoreTest.php in tests/src/Unit/PreferredSearchCoreTest.php

RuntimeTest.php in tests/src/Unit/Helper/RuntimeTest.php

SearchApiSolrAcquiaConnector.php in src/Plugin/SolrConnector/SearchApiSolrAcquiaConnector.php

SearchSubscriber.php in src/EventSubscriber/SearchSubscriber.php

StorageTest.php in tests/src/Unit/Helper/StorageTest.php