import de.juplo.kafka.chat.backend.domain.*;
import de.juplo.kafka.chat.backend.domain.exceptions.UnknownChatroomException;
import de.juplo.kafka.chat.backend.domain.*;
import de.juplo.kafka.chat.backend.domain.exceptions.UnknownChatroomException;
import lombok.extern.slf4j.Slf4j;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import lombok.extern.slf4j.Slf4j;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
.justOrEmpty(chatRoomData.get(id))
.switchIfEmpty(Mono.error(() -> new UnknownChatroomException(id)));
}
.justOrEmpty(chatRoomData.get(id))
.switchIfEmpty(Mono.error(() -> new UnknownChatroomException(id)));
}