public int getQuestionIdToAnswerCount() {
            return internalGetQuestionIdToAnswer().getMap()
                    .size();
        }
Protobuf type {@code im.turms.proto.CheckGroupJoinQuestionsAnswersRequest}
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/group/enrollment/CheckGroupJoinQuestionsAnswersRequest.java