public class AlteredTopic {
    public AlteredTopic(String name, int numPartitions, int replicationFactor, Map<Integer,List<Integer>> replicasAssignment) {
        // ...
    }
    /** The name of the topic to alter. */
    public String name();
    /** The new number of partitions, or -1 if the number of partitions should not be changed. */
    public int numPartitions();
    /** The new replication factor, or -1 if the replication factor should not be changed. */
    public intshort replicationFactor();
    /** 
     * The new assignments of partition to brokers, or the empty map 
     * if the broker should assign replicas automatically. 
     */
    Map<Integer,List<Integer>> replicasAssignment();
}

public class AlterTopicsOptions {
    public AlterTopicsOptions validateOnly(boolean validateOnly);
    public boolean validateOnly();
    public AlterTopicsOptions timeoutMs(long timeoutMs);
	public long timeoutMs();
 }

public class AlterTopicsResult {
    // package-access constructor
    /** A mapping of the name of a requested topic to the error for that topic. */
    Map<String, KafkaFuture<Void>> values(); 
    /** Return a future which succeeds if all the topic alterations were accepted. */
	KafkaFuture<Void> all();
}