8 string references to keyvalue in Drupal 9

DrupalTest::testKeyValue in core/tests/Drupal/Tests/Core/DrupalTest.php

Tests the keyValue() method.

InstallerServiceProvider::register in core/lib/Drupal/Core/Installer/InstallerServiceProvider.php

Registers services to the container.

KernelTestBase::register in core/tests/Drupal/KernelTests/KernelTestBase.php

Registers test-specific services.

MigrateSourceTest::getSource in core/modules/migrate/tests/src/Unit/MigrateSourceTest.php

Gets the source plugin to test.

ProviderRepository::__construct in core/modules/media/src/OEmbed/ProviderRepository.php

Constructs a ProviderRepository instance.

SqlContentEntityStorageSchemaTest::setUp in core/tests/Drupal/KernelTests/Core/Entity/Sql/SqlContentEntityStorageSchemaTest.php

UpdatePostUpdateTest::setUp in core/modules/system/tests/src/Functional/UpdateSystem/UpdatePostUpdateTest.php

UpdateRemovedPostUpdateTest::testRemovedPostUpdate in core/modules/system/tests/src/Functional/UpdateSystem/UpdateRemovedPostUpdateTest.php

Tests hook_post_update_NAME().