ScriptLanguage(String extension) {
            this.extension = extension
        }
    }

    static interface Scenario {

        void setup(AbstractIntegrationSpec spec)

        void createInitialBuildLayoutIn(TestFile dir, ScriptLanguage scriptLanguage)

        TestFile addMissingScript(TestFile dir, ScriptLanguage scriptLanguage)

        String getDisplayName(String scriptExtension)
    }