public String getIndexFieldRole() {
                return baseConfig.getIndexFieldRole();
            }

            @Override
            public String getIndexFieldSeqNo() {
                return baseConfig.getIndexFieldSeqNo();
            }

            @Override
            public String getIndexFieldVersion() {
                return baseConfig.getIndexFieldVersion();
            }

    public void test_indexFieldVersion() {
        assertEquals("_version", fessConfig.getIndexFieldVersion());
    }

    public void test_indexFieldSeqNo() {
        assertEquals("_seq_no", fessConfig.getIndexFieldSeqNo());
    }

    public void test_indexFieldPrimaryTerm() {
        assertEquals("_primary_term", fessConfig.getIndexFieldPrimaryTerm());
    }

    public void test_indexFieldLang() {

            form.doc = fessConfig.convertToEditableDoc(entity);
            form.id = (String) entity.remove(fessConfig.getIndexFieldId());
            form.seqNo = (Long) entity.remove(fessConfig.getIndexFieldSeqNo());
            form.primaryTerm = (Long) entity.remove(fessConfig.getIndexFieldPrimaryTerm());
        }).orElse(() -> {

            }

            @Override
            public String getIndexFieldRole() {
                return "role";
            }

            @Override
            public String getIndexFieldSeqNo() {
                return "seq_no";
            }

            @Override
            public String getIndexFieldVersion() {
                return "version";
            }

                    entity.put(fessConfig.getIndexFieldId(), newId);
                    entity.remove(fessConfig.getIndexFieldVersion());
                    final Number seqNo = (Number) entity.remove(fessConfig.getIndexFieldSeqNo());
                    final Number primaryTerm = (Number) entity.remove(fessConfig.getIndexFieldPrimaryTerm());
                    if (seqNo != null && primaryTerm != null && oldId != null) {

                    fessConfig.getIndexFieldPrimaryTerm(), //
                    fessConfig.getIndexFieldRole(), //
                    fessConfig.getIndexFieldSegment(), //
                    fessConfig.getIndexFieldSeqNo(), //
                    fessConfig.getIndexFieldSite(), //
                    fessConfig.getIndexFieldTimestamp(), //
                    fessConfig.getIndexFieldUrl(), //

            return "_id";
        }

        @Override
        public String getIndexFieldVersion() {
            return "_version";
        }

        @Override
        public String getIndexFieldSeqNo() {
            return "_seq_no";
        }

        @Override
        public String getIndexFieldPrimaryTerm() {
            return "_primary_term";
        }

        @Override

            }

            @Override
            public String getIndexFieldRole() {
                return "role";
            }

            @Override
            public String getIndexFieldSeqNo() {
                return "seq_no";
            }

            @Override
            public String getIndexFieldVersion() {
                return "version";
            }
        };

                    docMap.put(fessConfig.getIndexFieldId(), hit.getId());
                    docMap.put(fessConfig.getIndexFieldVersion(), hit.getVersion());
                    docMap.put(fessConfig.getIndexFieldSeqNo(), hit.getSeqNo());
                    docMap.put(fessConfig.getIndexFieldPrimaryTerm(), hit.getPrimaryTerm());
                    return docMap;
                }, cursor);
    }

    /**

                docMap.put(fessConfig.getIndexFieldId(), hit.getId());
                docMap.put(fessConfig.getIndexFieldVersion(), hit.getVersion());
                docMap.put(fessConfig.getIndexFieldSeqNo(), hit.getSeqNo());
                docMap.put(fessConfig.getIndexFieldPrimaryTerm(), hit.getPrimaryTerm());
                return docMap;
            }