6 files declare their use of AbstractEventVariables in Hook Event Dispatcher 8

AbstractPreprocessEvent.php in src/Event/Preprocess/AbstractPreprocessEvent.php

EntityEventTest.php in tests/src/Unit/Preprocess/EntityEventTest.php

ExampleEventVariables.php in src/Example/preprocess_example_module/src/Event/Variables/ExampleEventVariables.php

FakeEventVariables.php in tests/src/Unit/Preprocess/Helpers/FakeEventVariables.php

OtherEventTest.php in tests/src/Unit/Preprocess/OtherEventTest.php

OtherEventVariablesTest.php in tests/src/Unit/Preprocess/OtherEventVariablesTest.php