throw new IllegalArgumentException("script only works when there is exactly one value");
                                }
                                return values.nextValue();
                            } catch (IOException e) {
                                throw new RuntimeException(e);
                            }
                        }

                        @Override

            return;
        }

        List<String> keepWarnings = new ArrayList<>();
        arrayWarnings.elements().forEachRemaining(warning -> {
            String warningValue = warning.textValue();
            if (warnings.contains(warningValue) == false) {
                keepWarnings.add(warningValue);
            }

        });
        arrayWarnings.removeAll();

            keywordsNode.fieldNames().forEachRemaining(eachLanguage -> {
                keywordsNode.get(eachLanguage).elements().forEachRemaining(e -> {
                    final String eachKeyword = e.textValue();
                    final Set<String> languages = languagesByKeyword.computeIfAbsent(eachKeyword, _keyword -> new HashSet<>());
                    languages.add(eachLanguage);
                });
            });