23 files declare their use of PluginTypeInterface in Plugin 8.2

AdvancedPluginSelectorBasePluginSelectorForm.php in tests/modules/plugin_test_helper/src/AdvancedPluginSelectorBasePluginSelectorForm.php

DefaultPluginResolverInterface.php in src/DefaultPluginResolver/DefaultPluginResolverInterface.php

EventBasedDefaultPluginResolver.php in src/DefaultPluginResolver/EventBasedDefaultPluginResolver.php

EventBasedDefaultPluginResolverTest.php in tests/src/Unit/DefaultPluginResolver/EventBasedDefaultPluginResolverTest.php

ListPlugins.php in src/Controller/ListPlugins.php

ListPluginsTest.php in tests/src/Unit/Controller/ListPluginsTest.php

ListPluginTypes.php in src/Controller/ListPluginTypes.php

PluginDefinitionConverterTest.php in tests/src/Unit/ParamConverter/PluginDefinitionConverterTest.php

PluginId.php in src/Plugin/views/filter/PluginId.php

PluginIdTest.php in tests/src/Unit/Plugin/views/filter/PluginIdTest.php

PluginInstanceConverterTest.php in tests/src/Unit/ParamConverter/PluginInstanceConverterTest.php

PluginLabelTest.php in tests/src/Unit/Plugin/Field/FieldFormatter/PluginLabelTest.php

PluginSelectorBase.php in src/Plugin/Plugin/PluginSelector/PluginSelectorBase.php

PluginSelectorBaseTestBase.php in tests/src/Unit/Plugin/Plugin/PluginSelector/PluginSelectorBaseTestBase.php

PluginSelectorInterface.php in src/Plugin/Plugin/PluginSelector/PluginSelectorInterface.php

PluginTypeConverterTest.php in tests/src/Unit/ParamConverter/PluginTypeConverterTest.php

PluginTypeManagerTest.php in tests/src/Unit/PluginType/PluginTypeManagerTest.php

PluginTypeManagerTest.php in tests/src/Kernel/PluginType/PluginTypeManagerTest.php

PluginTypeParamConverter.php in tests/modules/plugin_test_helper/src/Controller/PluginTypeParamConverter.php

ResolveDefaultPlugin.php in src/Event/ResolveDefaultPlugin.php

ResolveDefaultPluginTest.php in tests/src/Unit/Event/ResolveDefaultPluginTest.php

TypedDefinitionEnsuringPluginDiscoveryDecorator.php in src/PluginDiscovery/TypedDefinitionEnsuringPluginDiscoveryDecorator.php

TypedDefinitionEnsuringPluginDiscoveryDecoratorTest.php in tests/src/Unit/PluginDiscovery/TypedDefinitionEnsuringPluginDiscoveryDecoratorTest.php