6 files declare their use of ExtraFieldDisplayFormattedBase in Extra Field 8.2

EmptyFormattedFieldTest.php in tests/extra_field_test/src/Plugin/ExtraField/Display/EmptyFormattedFieldTest.php

ExampleFormattedField.php in modules/extra_field_example/src/Plugin/ExtraField/Display/ExampleFormattedField.php

ExampleMultilingualField.php in modules/extra_field_example/src/Plugin/ExtraField/Display/ExampleMultilingualField.php

MultipleItemsFieldTest.php in tests/extra_field_test/src/Plugin/ExtraField/Display/MultipleItemsFieldTest.php

MultipleItemsFieldWithCacheDependencyTest.php in tests/extra_field_test/src/Plugin/ExtraField/Display/MultipleItemsFieldWithCacheDependencyTest.php

SingleTextFieldTest.php in tests/extra_field_test/src/Plugin/ExtraField/Display/SingleTextFieldTest.php