protected void addCriterion(String condition) {
            if (condition == null) {
                throw new RuntimeException("Value for condition cannot be null");
            }
            criteria.add(new Criterion(condition));
        }
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