19 files declare their use of WorkspaceManagerInterface

ActiveWorkspaceCheck.php in core/modules/workspaces/src/Access/ActiveWorkspaceCheck.php
ActiveWorkspaceCheckTest.php in core/modules/workspaces/tests/src/Unit/ActiveWorkspaceCheckTest.php
EntityAccess.php in core/modules/workspaces/src/Hook/EntityAccess.php
EntityOperations.php in core/modules/workspaces/src/Hook/EntityOperations.php
EntityReferenceSupportedNewEntitiesConstraintValidator.php in core/modules/workspaces/src/Plugin/Validation/Constraint/EntityReferenceSupportedNewEntitiesConstraintValidator.php
EntityWorkspaceConflictConstraintValidator.php in core/modules/workspaces/src/Plugin/Validation/Constraint/EntityWorkspaceConflictConstraintValidator.php
FormOperations.php in core/modules/workspaces/src/Hook/FormOperations.php
QueryFactory.php in core/modules/workspaces/src/EntityQuery/QueryFactory.php
QueryTrait.php in core/modules/workspaces/src/EntityQuery/QueryTrait.php
SwitchToLiveForm.php in core/modules/workspaces/src/Form/SwitchToLiveForm.php
ViewsOperations.php in core/modules/workspaces/src/Hook/ViewsOperations.php
WorkspaceActivateForm.php in core/modules/workspaces/src/Form/WorkspaceActivateForm.php
WorkspaceForm.php in core/modules/workspaces/src/Form/WorkspaceForm.php
WorkspaceRequestSubscriber.php in core/modules/workspaces/src/EventSubscriber/WorkspaceRequestSubscriber.php
WorkspaceRequestSubscriberTest.php in core/modules/workspaces/tests/src/Unit/WorkspaceRequestSubscriberTest.php
WorkspacesHooks.php in core/modules/workspaces/src/Hook/WorkspacesHooks.php
WorkspacesHtmlEntityFormController.php in core/modules/workspaces/src/Controller/WorkspacesHtmlEntityFormController.php
WorkspacesLazyBuilder.php in core/modules/navigation/src/WorkspacesLazyBuilder.php
WorkspaceSwitcherForm.php in core/modules/workspaces/src/Form/WorkspaceSwitcherForm.php

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