8 files declare their use of ParamConverterInterface

LanguageConverter.php in core/modules/language/src/ProxyClass/LanguageConverter.php
LanguageConverter.php in core/modules/language/src/LanguageConverter.php
LayoutSectionStorageParamConverter.php in core/modules/layout_builder/src/Routing/LayoutSectionStorageParamConverter.php
NodePreviewConverter.php in core/modules/node/src/ProxyClass/ParamConverter/NodePreviewConverter.php
NodePreviewConverter.php in core/modules/node/src/ParamConverter/NodePreviewConverter.php
ResourceTypeConverter.php in core/modules/jsonapi/src/ParamConverter/ResourceTypeConverter.php
ViewUIConverter.php in core/modules/views_ui/src/ProxyClass/ParamConverter/ViewUIConverter.php
ViewUIConverter.php in core/modules/views_ui/src/ParamConverter/ViewUIConverter.php

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