this.negotiatedVersion = negotiatedVersion;
    }

    /**
     * Get the number of send credits granted
     *
     * @return credits granted
     */
    public int getCreditsGranted() {
        return creditsGranted;
    }

    /**
     * Set the number of send credits granted
     *
     * @param creditsGranted credits to grant
     */

     */
    @Size(max = 10)
    public String incrementalCrawling;

    /**
     * Number of days to keep crawled documents before cleanup.
     * Set to -1 to disable automatic cleanup.
     */
    @Required
    @Min(-1)
    @Max(1000)
    @ValidateTypeFailure
    public Integer dayForCleanup;

    /**
     * Number of threads to use for crawling operations.

        if (o == null) {
            return null;
        } else if (o instanceof Short) {
            return (Short) o;
        } else if (o instanceof Number) {
            return ((Number) o).shortValue();
        } else if (o instanceof String) {
            return toShort((String) o);
        } else if (o instanceof java.util.Date) {
            if (pattern != null) {

   * bulkGet(keys)} with a relative large number of keys can cause an excessive number of shared
   * stripes (much like the birthday paradox, where much fewer than anticipated birthdays are needed
   * for a pair of them to match). Please consider carefully the implications of the number of
   * stripes, the intended concurrency level, and the typical number of keys used in a {@code

)

var (
	tmp1  = big.NewInt(0)
	tmp2  = big.NewInt(0)
	numer = big.NewInt(1)
	accum = big.NewInt(0)
	denom = big.NewInt(1)
	ten   = big.NewInt(10)
)

func extractDigit() int64 {
	if big.CmpInt(numer, accum) > 0 {
		return -1
	}
	tmp1.Lsh(numer, 1).Add(tmp1, numer).Add(tmp1, accum)
	big.DivModInt(tmp1, tmp2, tmp1, denom)
	tmp2.Add(tmp2, numer)
	if big.CmpInt(tmp2, denom) >= 0 {
		return -1
	}

	internodeRecvBytesTotal   MetricName = "recv_bytes_total"
)

var (
	internodeErrorsTotalMD = NewCounterMD(internodeErrorsTotal,
		"Total number of failed internode calls")
	internodeDialedErrorsTotalMD = NewCounterMD(internodeDialErrorsTotal,
		"Total number of internode TCP dial timeouts and errors")
	internodeDialAvgTimeNanosMD = NewGaugeMD(internodeDialAvgTimeNanos,
		"Average dial time of internode TCP calls in nanoseconds")

        this.initialCredits = initialCredits;
    }

    /**
     * Get number of credits granted by peer
     *
     * @return granted credits
     */
    public int getCreditsGranted() {
        return creditsGranted;
    }

    /**
     * Set number of credits granted by peer
     *
     * @param creditsGranted credits granted
     */

)

var (
	auditFailedMessagesMD = NewCounterMD(auditFailedMessages,
		"Total number of messages that failed to send since start",
		targetID)
	auditTargetQueueLengthMD = NewGaugeMD(auditTargetQueueLength,
		"Number of unsent messages in queue for target",
		targetID)
	auditTotalMessagesMD = NewCounterMD(auditTotalMessages,
		"Total number of messages sent since start",
		targetID)
)

Lo pones encima de una función. Como un bonito sombrero decorativo (supongo que de ahí viene el término).

Un "decorador" toma la función de abajo y hace algo con ella.

En nuestro caso, este decorador le dice a **FastAPI** que la función de abajo corresponde al **path** `/` con una **operation** `get`.

Es el "**path operation decorator**".

///

También puedes usar las otras operaciones:

     *
     * @param s the short value to encode
     * @param dst the destination byte array
     * @param di the starting index in the destination array
     * @return the number of bytes written (2)
     */
    public static int enc_uint16be(final short s, final byte[] dst, int di) {
        dst[di] = (byte) (s >> 8 & 0xFF);
        di++;
        dst[di] = (byte) (s & 0xFF);