15 files declare their use of BlockContentCreationTrait

BlockContentCacheTagsTest.php in core/modules/block_content/tests/src/Functional/BlockContentCacheTagsTest.php
BlockContentResourceTestBase.php in core/modules/block_content/tests/src/Functional/Rest/BlockContentResourceTestBase.php
BlockContentTest.php in core/modules/jsonapi/tests/src/Functional/BlockContentTest.php
BlockContentTestBase.php in core/modules/block_content/tests/src/Functional/Views/BlockContentTestBase.php
BlockContentTestBase.php in core/modules/block_content/tests/src/Functional/BlockContentTestBase.php
ConfigExportTest.php in core/modules/config/tests/src/FunctionalJavascript/ConfigExportTest.php
ConfigTranslationListUiTest.php in core/modules/config_translation/tests/src/Functional/ConfigTranslationListUiTest.php
ContentTranslationStandardFieldsTest.php in core/modules/content_translation/tests/src/Functional/ContentTranslationStandardFieldsTest.php
InlineBlockTestBase.php in core/modules/layout_builder/tests/src/FunctionalJavascript/InlineBlockTestBase.php
LayoutBuilderContentModerationIntegrationTest.php in core/modules/content_moderation/tests/src/Functional/LayoutBuilderContentModerationIntegrationTest.php
LayoutBuilderDisableInteractionsTest.php in core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderDisableInteractionsTest.php
LayoutBuilderRevisionTest.php in core/modules/layout_builder/tests/src/Functional/LayoutBuilderRevisionTest.php
LayoutBuilderTest.php in core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderTest.php
LayoutBuilderUiTest.php in core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderUiTest.php
ModerationStateBlockTest.php in core/modules/content_moderation/tests/src/Functional/ModerationStateBlockTest.php

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