6 methods override ConfigStorageTestBase::read() in Drupal 9

CachedStorageTest::read in core/tests/Drupal/KernelTests/Core/Config/Storage/CachedStorageTest.php

DatabaseStorageTest::read in core/tests/Drupal/KernelTests/Core/Config/Storage/DatabaseStorageTest.php

FileStorageTest::read in core/tests/Drupal/KernelTests/Core/Config/Storage/FileStorageTest.php

ManagedStorageTest::read in core/tests/Drupal/KernelTests/Core/Config/Storage/ManagedStorageTest.php

MemoryStorageTest::read in core/tests/Drupal/KernelTests/Core/Config/Storage/MemoryStorageTest.php

StorageReplaceDataWrapperTest::read in core/tests/Drupal/KernelTests/Core/Config/Storage/StorageReplaceDataWrapperTest.php