private com.google.protobuf.SingleFieldBuilder<im.turms.server.common.access.client.dto.request.group.enrollment.UpdateGroupJoinQuestionRequest, im.turms.server.common.access.client.dto.request.group.enrollment.UpdateGroupJoinQuestionRequest.Builder, im.turms.server.common.access.client.dto.request.group.enrollment.UpdateGroupJoinQuestionRequestOrBuilder> getUpdateGroupJoinQuestionRequestFieldBuilder() {
            if (updateGroupJoinQuestionRequestBuilder_ == null) {
                if (!(kindCase_ == 511)) {
                    kind_ = im.turms.server.common.access.client.dto.request.group.enrollment.UpdateGroupJoinQuestionRequest
                            .getDefaultInstance();
                }
                updateGroupJoinQuestionRequestBuilder_ =
                        new com.google.protobuf.SingleFieldBuilder<>(
                                (im.turms.server.common.access.client.dto.request.group.enrollment.UpdateGroupJoinQuestionRequest) kind_,
                                getParentForChildren(),
                                isClean());
                kind_ = null;
            }
            kindCase_ = 511;
            onChanged();
            return updateGroupJoinQuestionRequestBuilder_;
        }
<code>.im.turms.proto.UpdateGroupJoinQuestionRequest update_group_join_question_request = 511;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/TurmsRequest.java