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public class CreateDelegationTokenResult {
    private final KafkaFuture<DelegationToken> delegationToken;

    CreateDelegationTokenResult(KafkaFuture<DelegationToken> delegationToken) {
        this.delegationToken = delegationToken;
    }

    /**
     * Returns a future which yields a delegation token
     */
    public KafkaFuture<DelegationToken> delegationToken() {
        return delegationToken;
    }
}
 
public class CreateDelegationTokenOptions extends AbstractOptions<CreateDelegationTokenOptions> {
    // default value is -1, This will default the token maxLifeTime to server side config value (delegation.token.max.lifetime.ms).
    private long maxLifeTimeMs = -1;
    private List<KafkaPrincipal> renewers =  new LinkedList<>();

    public CreateDelegationTokenOptions renewers(List<KafkaPrincipal> renewers) {
        this.renewers = renewers;
        return this;
    }

    public List<KafkaPrincipal> renewers() {
        return renewers;
    }

    public CreateDelegationTokenOptions maxlifeTimeMs(long maxLifeTimeMs) {
        this.maxLifeTimeMs = maxLifeTimeMs;
        return this;
    }

    public long maxlifeTimeMs() {
        return maxLifeTimeMs;
    }
}
 
public class RenewDelegationTokenResult {
    private final KafkaFuture<Long> expiryTimestamp;

    RenewDelegationTokenResult(KafkaFuture<Long> expiryTimestamp) {
        this.expiryTimestamp = expiryTimestamp;
    }

    /**
     * Returns a future which yields expiry timestamp
     */
    public KafkaFuture<Long> expiryTimestamp() {
        return expiryTimestamp;
    }
}
 
public class RenewDelegationTokenOptions extends AbstractOptions<RenewDelegationTokenOptions> {
    // default value is -1. This will default the Renew Time period to a server side config value (delegation.token.expiry.time.ms).
    private long renewTimePeriodMs = -1;

    public RenewDelegationTokenOptions renewTimePeriodMs(long renewTimePeriodMs) {
        this.renewTimePeriodMs = renewTimePeriodMs;
        return this;
    }

    public long renewTimePeriodMs() {
        return renewTimePeriodMs;
    }
}
 
public class ExpireDelegationTokenResult {
    private final KafkaFuture<Long> expiryTimestamp;

    ExpireDelegationTokenResult(KafkaFuture<Long> expiryTimestamp) {
        this.expiryTimestamp = expiryTimestamp;
    }

    /**
     * Returns a future which yields expiry timestamp
     */
    public KafkaFuture<Long> expiryTimestamp() {
        return expiryTimestamp;
    }
}


public class ExpireDelegationTokenOptions extends AbstractOptions<ExpireDelegationTokenOptions> {
	//default value is -1. This token will get invalidated immediately
    private long expiryTimePeriodMs = -1;

    public ExpireDelegationTokenOptions expiryTimePeriodMs(long expiryTimePeriodMs) {
        this.expiryTimePeriodMs = expiryTimePeriodMs;
        return this;
    }

    public long expiryTimePeriodMs() {
        return expiryTimePeriodMs;
    }
}


public class DescribeDelegationTokenResult {
    private final KafkaFuture<List<DelegationToken>> delegationTokens;

    DescribeDelegationTokenResult(KafkaFuture<List<DelegationToken>> delegationTokens) {
        this.delegationTokens = delegationTokens;
    }

    /**
     * Returns a future which yields list of delegation tokens
     */
    public KafkaFuture<List<DelegationToken>> delegationTokens() {
        return delegationTokens;
    }
}
 
public class DescribeDelegationTokenOptions extends AbstractOptions<DescribeDelegationTokenOptions> {
   //default null vaule indicates to return all the allowed tokens 
   private List<KafkaPrincipal> owners;

    public DescribeDelegationTokenOptions owners(List<KafkaPrincipal> owners) {
        this.owners = owners;
        return this;
    }

    public List<KafkaPrincipal> owners() {
        return owners;
    }