private List<Word> findArgumentWords(ScenarioCaseModel scenarioCaseModel) {
        List<Word> arguments = Lists.newArrayList();
        List<StepModel> steps = scenarioCaseModel.getSteps();
        findArgumentWords(steps, arguments);
        return arguments;
    }
Returns a list with argument words that are not equal in all cases.
jgiven-core/src/main/java/com/tngtech/jgiven/report/analysis/CaseArgumentAnalyser.java