final ConstraintValidatorContext context = null;
        assertTrue(validator.isValid(null, context));
    }

    public void test_isValid_blankValue() {
        final ConstraintValidatorContext context = null;
        assertTrue(validator.isValid(" ", context));
        assertTrue(validator.isValid("   ", context));
        assertTrue(validator.isValid("\t", context));
        assertTrue(validator.isValid("\n", context));

func (sys *NotificationSys) ServerInfo(ctx context.Context, metrics bool) []madmin.ServerProperties {
	reply := make([]madmin.ServerProperties, len(sys.peerClients))
	var wg sync.WaitGroup
	for i, client := range sys.peerClients {
		if client == nil {
			continue
		}
		wg.Add(1)
		go func(client *peerRESTClient, idx int) {
			defer wg.Done()
			ctx, cancel := context.WithTimeout(ctx, 10*time.Second)

        }

        if (isSearchField(field)) {
            context.addFieldLog(field, text);
            stream(texts).of(stream -> stream.forEach(t -> context.addHighlightedQuery(t)));
            return buildMatchPhraseQuery(field, text);
        }

        context.addFieldLog(Constants.DEFAULT_FIELD, text);

	GetBucketInfo(ctx context.Context, bucket string, opts BucketOptions) (BucketInfo, error)
	MakeBucket(ctx context.Context, bucket string, opts MakeBucketOptions) error
	DeleteBucket(ctx context.Context, bucket string, opts DeleteBucketOptions) error

	GetHost() string
	SetPools([]int)
	GetPools() []int
}

type localPeerS3Client struct {
	node  Node

		return nil
	}
	clnt.SetCustomTransport(globalRemoteTargetTransport)
	return clnt
}

// heartBeat performs liveness check on remote endpoints.
func (sys *BucketTargetSys) heartBeat(ctx context.Context) {
	hcTimer := time.NewTimer(defaultHealthCheckDuration)
	defer hcTimer.Stop()
	for {
		select {
		case <-hcTimer.C:
			sys.hMutex.RLock()
			eps := make([]madmin.ServerProperties, 0, len(sys.hc))

            int bytesRead = context.decode(buffer, 0, 8);

            assertEquals(8, bytesRead);
            assertNotNull(context.getHashAlgos());
            assertEquals(2, context.getHashAlgos().length);
            assertEquals(0x01, context.getHashAlgos()[0]);
            assertEquals(0x02, context.getHashAlgos()[1]);
            assertNotNull(context.getSalt());
            assertEquals(0, context.getSalt().length);
        }

        final String field = getSearchField(context.getDefaultField(), term.field());

        if (Constants.DEFAULT_FIELD.equals(field)) {
            final String text = term.text();
            context.addFieldLog(field, text);
            context.addHighlightedQuery(text);
            return buildDefaultQueryBuilder(fessConfig, context,
                    (f, b) -> QueryBuilders.fuzzyQuery(f, text)

                    // Multiple threads accessing context simultaneously
                    for (int j = 0; j < 50; j++) {
                        context.getConfig();
                        context.getBufferCache();
                        context.getDfs();
                        context.getNameServiceClient();
                        context.getSIDResolver();
                        context.getTransportPool();

            when(transportPool.getChallenge(context, address)).thenReturn(challenge);
            doNothing().when(transportPool).logon(context, address);

            // When
            byte[] retrievedChallenge = transportPool.getChallenge(context, address);
            transportPool.logon(context, address);

            // Then
            assertNotNull(retrievedChallenge);

            boolean exclusive);

    /**
     * Gets or creates an SMB transport for the given context.
     *
     * @param tc
     *            context to use
     * @param address the server address
     * @param port the port number
     * @param localAddr the local address to bind to
     * @param localPort the local port to bind to