6 string references to 'SessionHandlerInterface' in Zircon Profile 8

SessionHandlerProxyTest::setUp in vendor/symfony/http-foundation/Tests/Session/Storage/Proxy/SessionHandlerProxyTest.php

WriteCheckSessionHandlerTest::test in vendor/symfony/http-foundation/Tests/Session/Storage/Handler/WriteCheckSessionHandlerTest.php

WriteCheckSessionHandlerTest::testNonSkippedWrite in vendor/symfony/http-foundation/Tests/Session/Storage/Handler/WriteCheckSessionHandlerTest.php

WriteCheckSessionHandlerTest::testSkippedWrite in vendor/symfony/http-foundation/Tests/Session/Storage/Handler/WriteCheckSessionHandlerTest.php

WriteCheckSessionHandlerTest::testWrite in vendor/symfony/http-foundation/Tests/Session/Storage/Handler/WriteCheckSessionHandlerTest.php

WriteSafeSessionHandlerTest::setUp in core/tests/Drupal/Tests/Core/Session/WriteSafeSessionHandlerTest.php