15 files declare their use of FormattableMarkup in Zircon Profile 8

CommentTokenReplaceTest.php in core/modules/comment/src/Tests/CommentTokenReplaceTest.php

Contains \Drupal\comment\Tests\CommentTokenReplaceTest.

EntityDisplayTest.php in core/modules/field_ui/src/Tests/EntityDisplayTest.php

Contains \Drupal\field_ui\Tests\EntityDisplayTest.

EntityReferenceItemTest.php in core/modules/field/src/Tests/EntityReference/EntityReferenceItemTest.php

Contains \Drupal\field\Tests\EntityReference\EntityReferenceItemTest.

FormattableMarkupTest.php in core/tests/Drupal/Tests/Component/Render/FormattableMarkupTest.php

Contains \Drupal\Tests\Component\Render\FormattableMarkupTest.

LanguageNegotiationContentEntityTest.php in core/modules/language/src/Tests/LanguageNegotiationContentEntityTest.php

Contains \Drupal\language\Tests\LanguageNegotiationLanguageContentEntityTest.

LocaleUpdateInterfaceTest.php in core/modules/locale/src/Tests/LocaleUpdateInterfaceTest.php

Contains \Drupal\locale\Tests\LocaleUpdateInterfaceTest.

NodeTokenReplaceTest.php in core/modules/node/src/Tests/NodeTokenReplaceTest.php

Contains \Drupal\node\Tests\NodeTokenReplaceTest.

SafeMarkup.php in core/lib/Drupal/Component/Utility/SafeMarkup.php

Contains \Drupal\Component\Utility\SafeMarkup.

TokenReplaceUnitTest.php in core/modules/system/src/Tests/System/TokenReplaceUnitTest.php

Contains \Drupal\system\Tests\System\TokenReplaceUnitTest.

TranslatableMarkup.php in core/lib/Drupal/Core/StringTranslation/TranslatableMarkup.php

Contains \Drupal\Core\StringTranslation\TranslatableMarkup.

TranslatableMarkupTest.php in core/tests/Drupal/Tests/Core/StringTranslation/TranslatableMarkupTest.php

Contains \Drupal\Tests\Core\StringTranslation\TranslatableMarkupTest.

TwigMarkupInterfaceTest.php in core/tests/Drupal/KernelTests/Core/Theme/TwigMarkupInterfaceTest.php

Contains \Drupal\KernelTests\Core\Theme\ThemeRenderAndAutoescapeTest.

UpdatePathRC1TestBaseTest.php in core/modules/system/src/Tests/Update/UpdatePathRC1TestBaseTest.php

Contains \Drupal\system\Tests\Update\UpdatePathRC1TestBaseTest.

UpdatePostUpdateTest.php in core/modules/system/src/Tests/Update/UpdatePostUpdateTest.php

Contains \Drupal\system\Tests\Update\UpdatePostUpdateTest.

UserTokenReplaceTest.php in core/modules/user/src/Tests/UserTokenReplaceTest.php

Contains \Drupal\user\Tests\UserTokenReplaceTest.