DependencyStringNotationConverter<DefaultDependencyConstraint> stringNotationConverter = new DependencyStringNotationConverter<>(instantiator, DefaultDependencyConstraint.class, stringInterner);

                validate(version.trim())
            );
        }
    }

    static class StringNotationConverter extends TypedNotationConverter<String, ModuleComponentIdentifier> {

        StringNotationConverter() {
            super(String.class);
        }

        @Override
        protected ModuleComponentIdentifier parseType(String notation) {

                                                  Interner<String> stringInterner) {
        NotationConverter<String, ? extends ExternalModuleDependency> stringNotationConverter =
            new DependencyStringNotationConverter<>(instantiator, DefaultExternalModuleDependency.class, stringInterner);

Class <org.gradle.api.internal.notations.ComponentIdentifierParserFactory$StringNotationConverter> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (ComponentIdentifierParserFactory.java:0)