22 files declare their use of ContextDefinition

AutocompleteTest.php in tests/src/Kernel/Engine/AutocompleteTest.php
AutoSaveTest.php in tests/src/Unit/Integration/Engine/AutoSaveTest.php
ConfigEntityTest.php in tests/src/Kernel/ConfigEntityTest.php
ContextDefinition.php in src/Context/Annotation/ContextDefinition.php
ContextIntegrationTest.php in tests/src/Kernel/ContextIntegrationTest.php
CoreIntegrationTest.php in tests/src/Kernel/CoreIntegrationTest.php
DataProcessorTest.php in tests/src/Kernel/DataProcessorTest.php
EntityCreateDeriver.php in src/Plugin/RulesAction/EntityCreateDeriver.php
EntityCreateTest.php in tests/src/Unit/Integration/RulesAction/EntityCreateTest.php
EntityPathAliasCreateDeriver.php in src/Plugin/RulesAction/EntityPathAliasCreateDeriver.php
IntegrityCheckTest.php in tests/src/Unit/Integration/Engine/IntegrityCheckTest.php
LoopTest.php in tests/src/Unit/Integration/Engine/LoopTest.php
MetadataAssertionTest.php in tests/src/Kernel/Engine/MetadataAssertionTest.php
PrepareExecutionMetadataStateTest.php in tests/src/Unit/Integration/Engine/PrepareExecutionMetadataStateTest.php
RulesComponent.php in src/Engine/RulesComponent.php
RulesComponentActionTest.php in tests/src/Unit/Integration/RulesAction/RulesComponentActionTest.php
RulesComponentConfig.php in src/Entity/RulesComponentConfig.php
RulesComponentTest.php in tests/src/Unit/Integration/Engine/RulesComponentTest.php
RulesEngineTest.php in tests/src/Kernel/RulesEngineTest.php
RulesEntityIntegrationTestBase.php in tests/src/Unit/Integration/RulesEntityIntegrationTestBase.php
RulesEventManager.php in src/Core/RulesEventManager.php
TokenIntegrationTest.php in tests/src/Kernel/TokenIntegrationTest.php