private void setQuestions(
            int index,
            im.turms.client.model.proto.model.group.GroupJoinQuestion value) {
        value.getClass();
        ensureQuestionsIsMutable();
        questions_.set(index, value);
    }
<code>repeated .im.turms.proto.GroupJoinQuestion questions = 2;</code>
turms-client-kotlin/src/main/java/im/turms/client/model/proto/request/group/enrollment/CreateGroupJoinQuestionsRequest.java