public DescribeProducersOptions brokerId(int brokerId) {
        this.brokerId = OptionalInt.of(brokerId);
        return this;
    }
Options for {@link Admin#describeProducers(Collection)}.

The API of this class is evolving, see {@link Admin} for details.
clients/src/main/java/org/apache/kafka/clients/admin/DescribeProducersOptions.java