assertEquals(1, fields.length);
        assertEquals("boost", fields[0]);
    }

    public void test_indexAdminLongFields() {
        String fieldsStr = fessConfig.getIndexAdminLongFields();
        assertEquals("", fieldsStr);
        String[] fields = fieldsStr.isEmpty() ? new String[0] : fieldsStr.split(",");
        assertEquals(0, fields.length);
    }

                }).collect(Collectors.toList()));
    }

    String getIndexAdminLongFields();

    default Set<String> getIndexAdminLongFieldSet() {
        @SuppressWarnings("unchecked")
        Set<String> fieldSet = (Set<String>) propMap.get(INDEX_ADMIN_LONG_FIELD_SET);
        if (fieldSet == null) {
            fieldSet = split(getIndexAdminLongFields(), ",")