7 files declare their use of PollInterface in Poll 8

Poll.php in src/Entity/Poll.php

PollController.php in src/Controller/PollController.php

PollKernelTestBase.php in tests/src/Kernel/PollKernelTestBase.php

PollTestBase.php in tests/src/Functional/PollTestBase.php

PollViewForm.php in src/Form/PollViewForm.php

PollVoteJavascriptTest.php in tests/src/FunctionalJavascript/PollVoteJavascriptTest.php

PollVoteTest.php in tests/src/Functional/PollVoteTest.php