6 files declare their use of DesignToken

DesignTokenConfigEntityKernelTest.php in core/tests/Drupal/KernelTests/Core/Theme/DesignToken/DesignTokenConfigEntityKernelTest.php
DesignTokenEntityTest.php in core/tests/Drupal/Tests/Core/Theme/DesignToken/DesignTokenEntityTest.php
DesignTokenResourceTestBase.php in core/tests/Drupal/FunctionalTests/Rest/DesignTokenResourceTestBase.php
DesignTokenTest.php in core/modules/jsonapi/tests/src/Functional/DesignTokenTest.php
DesignTokenValidationTest.php in core/tests/Drupal/KernelTests/Core/Theme/DesignToken/DesignTokenValidationTest.php
DesignTokenValuePluginCollection.php in core/lib/Drupal/Core/Theme/DesignToken/DesignTokenValuePluginCollection.php

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