private com.google.protobuf.MapFieldLite<java.lang.Long, java.lang.String> internalGetMutableQuestionIdToAnswer() {
        if (!questionIdToAnswer_.isMutable()) {
            questionIdToAnswer_ = questionIdToAnswer_.mutableCopy();
        }
        return questionIdToAnswer_;
    }
Protobuf type {@code im.turms.proto.CheckGroupJoinQuestionsAnswersRequest}
turms-client-kotlin/src/main/java/im/turms/client/model/proto/request/group/enrollment/CheckGroupJoinQuestionsAnswersRequest.java