11 files declare their use of QueryPluginBase in Drupal 9

content_moderation_test_views.module in core/modules/content_moderation/tests/modules/content_moderation_test_views/content_moderation_test_views.module

Module file for the content moderation test views module.

DisplayKernelTest.php in core/modules/views/tests/src/Kernel/Plugin/DisplayKernelTest.php

EntityFieldRenderer.php in core/modules/views/src/Entity/Render/EntityFieldRenderer.php

EntityTranslationRendererBase.php in core/modules/views/src/Entity/Render/EntityTranslationRendererBase.php

QueryTest.php in core/modules/views/tests/modules/views_test_data/src/Plugin/views/query/QueryTest.php

RendererBase.php in core/modules/views/src/Entity/Render/RendererBase.php

TranslationLanguageRenderer.php in core/modules/views/src/Entity/Render/TranslationLanguageRenderer.php

ViewExecutableTest.php in core/modules/views/tests/src/Unit/ViewExecutableTest.php

ViewExecutableTest.php in core/modules/views/tests/src/Kernel/ViewExecutableTest.php

ViewsQueryAlter.php in core/modules/workspaces/src/ViewsQueryAlter.php

workspaces.module in core/modules/workspaces/workspaces.module

Provides full-site preview functionality for content staging.