16 files declare their use of SectionComponent

AddBlockForm.php in core/modules/layout_builder/src/Form/AddBlockForm.php
BlockComponentRenderArrayTest.php in core/modules/layout_builder/tests/src/Unit/BlockComponentRenderArrayTest.php
ConfigureBlockFormBase.php in core/modules/layout_builder/src/Form/ConfigureBlockFormBase.php
DefaultsSectionStorageTest.php in core/modules/layout_builder/tests/src/Kernel/DefaultsSectionStorageTest.php
LayoutBuilderEntityViewDisplay.php in core/modules/layout_builder/src/Entity/LayoutBuilderEntityViewDisplay.php
LayoutEntityHelperTraitTest.php in core/modules/layout_builder/tests/src/Unit/LayoutEntityHelperTraitTest.php
LayoutSectionTest.php in core/modules/layout_builder/tests/src/Functional/LayoutSectionTest.php
OverridesSectionStorageTest.php in core/modules/layout_builder/tests/src/Kernel/OverridesSectionStorageTest.php
SectionComponentBuildRenderArrayEvent.php in core/modules/layout_builder/src/Event/SectionComponentBuildRenderArrayEvent.php
SectionComponentTest.php in core/modules/layout_builder/tests/src/Unit/SectionComponentTest.php
SectionListTestBase.php in core/modules/layout_builder/tests/src/Kernel/SectionListTestBase.php
SectionRenderTest.php in core/modules/layout_builder/tests/src/Unit/SectionRenderTest.php
SectionTest.php in core/modules/layout_builder/tests/src/Unit/SectionTest.php
TestPrepareLayout.php in core/modules/layout_builder/tests/modules/layout_builder_element_test/src/EventSubscriber/TestPrepareLayout.php
TestStateBasedSectionStorage.php in core/modules/layout_builder/tests/modules/layout_builder_test/src/Plugin/SectionStorage/TestStateBasedSectionStorage.php
TranslatableFieldTest.php in core/modules/layout_builder/tests/src/Kernel/TranslatableFieldTest.php

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