def result = Lookup.find(lines, "public class $name extends AbstractExternalDependencyFactory {")
            assert result.match
            if (javadoc) {
                assert result.javadocContains(javadoc)
            }
        }

        void hasLibraryAccessor(String name) {
            def result = Lookup.find(lines, "public static class $name extends SubDependencyFactory {")