protected void addCriterion(String condition, Object value1, Object value2, String property) {
            if (value1 == null || value2 == null) {
                throw new RuntimeException("Between values for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value1, value2));
        }
This class was generated by MyBatis Generator.
This class corresponds to the database table chat_group_user

@mbg.generated
AnyChatServer/src/main/java/org/anychat/model/base/ChatGroupUserCriteria.java