7 files declare their use of EntityAdapter in Drupal 10

ContentEntityBaseUnitTest.php in core/tests/Drupal/Tests/Core/Entity/ContentEntityBaseUnitTest.php

EntityAdapterUnitTest.php in core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php

EntityBaseTest.php in core/tests/Drupal/KernelTests/Core/Entity/EntityBaseTest.php

EntityContextDefinition.php in core/lib/Drupal/Core/Plugin/Context/EntityContextDefinition.php

EntityDeriver.php in core/lib/Drupal/Core/Entity/Plugin/DataType/Deriver/EntityDeriver.php

RecursiveContextualValidatorTest.php in core/tests/Drupal/KernelTests/Core/TypedData/RecursiveContextualValidatorTest.php

TemporaryJsonapiFileFieldUploader.php in core/modules/jsonapi/src/Controller/TemporaryJsonapiFileFieldUploader.php