private com.google.protobuf.SingleFieldBuilder<im.turms.server.common.access.client.dto.request.group.enrollment.CreateGroupJoinQuestionsRequest, im.turms.server.common.access.client.dto.request.group.enrollment.CreateGroupJoinQuestionsRequest.Builder, im.turms.server.common.access.client.dto.request.group.enrollment.CreateGroupJoinQuestionsRequestOrBuilder> getCreateGroupJoinQuestionsRequestFieldBuilder() {
            if (createGroupJoinQuestionsRequestBuilder_ == null) {
                if (!(kindCase_ == 503)) {
                    kind_ = im.turms.server.common.access.client.dto.request.group.enrollment.CreateGroupJoinQuestionsRequest
                            .getDefaultInstance();
                }
                createGroupJoinQuestionsRequestBuilder_ =
                        new com.google.protobuf.SingleFieldBuilder<>(
                                (im.turms.server.common.access.client.dto.request.group.enrollment.CreateGroupJoinQuestionsRequest) kind_,
                                getParentForChildren(),
                                isClean());
                kind_ = null;
            }
            kindCase_ = 503;
            onChanged();
            return createGroupJoinQuestionsRequestBuilder_;
        }
<code>.im.turms.proto.CreateGroupJoinQuestionsRequest create_group_join_questions_request = 503;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/TurmsRequest.java