public Builder putQuestionIdToAnswer(long key, java.lang.String value) {

            if (value == null) {
                throw new NullPointerException("map value");
            }
            internalGetMutableQuestionIdToAnswer().getMutableMap()
                    .put(key, value);
            bitField0_ |= 0x00000001;
            return this;
        }
<code>map&lt;int64, string&gt; question_id_to_answer = 1;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/group/enrollment/CheckGroupJoinQuestionsAnswersRequest.java