assertArgumentNotEmpty("pattern", pattern);

        return converter(new TimestampConverter(pattern), propertyNames);
    }

    /**
     * Sets a converter for numbers.
     *
     * @param pattern
     *            The number pattern. Must not be {@literal null} or an empty string.
     * @param propertyNames

    * objetos JSON (`dict`).
    * arrays JSON (`list`), definindo tipos dos itens.
    * campos String (`str`), definindo tamanho mínimo e máximo.
    * Numbers (`int`, `float`) com valores mínimos e máximos, etc.

* Validação de tipos mais exóticos, como:
    * URL.
    * Email.
    * UUID.
    * ...e outros.

    
    // Witness RPC interface
    private static final String WITNESS_INTERFACE_UUID = "ccd8c074-d0e5-4a40-92b4-d074faa6ba28";
    private static final int WITNESS_INTERFACE_VERSION = 1;
    
    // RPC operation numbers
    private static final int WITNESS_REGISTER = 0;
    private static final int WITNESS_UNREGISTER = 1;
    private static final int WITNESS_ASYNC_NOTIFY = 2;
    private static final int WITNESS_HEARTBEAT = 3;
    

///

For example, this custom validator checks that the item ID starts with `isbn-` for an <abbr title="ISBN means International Standard Book Number">ISBN</abbr> book number or with `imdb-` for an <abbr title="IMDB (Internet Movie Database) is a website with information about movies">IMDB</abbr> movie URL ID:

	case int64:
		return x, nil
	case string:
		// Parse as number, truncate floating point if
		// needed.
		// String might contain trimming spaces, which
		// needs to be trimmed.
		res, ok := strToInt(strings.TrimSpace(x))
		if !ok {
			return 0, errCastFailure("could not parse as int")
		}
		return res, nil
	case []byte:
		// Parse as number, truncate floating point if
		// needed.

    public List<Map<String, Object>> documentItems;

    /** Number of results per page */
    public String pageSize;

    /** Current page number for pagination */
    public String currentPageNumber;

    /** Total number of records found */
    public String allRecordCount;

    /** Total number of pages for pagination */
    public String allPageCount;

	// Constants for the first byte in CreatorVersion.
	creatorFAT    = 0
	creatorUnix   = 3
	creatorNTFS   = 11
	creatorVFAT   = 14
	creatorMacOSX = 19

	// Version numbers.
	zipVersion20 = 20 // 2.0
	zipVersion45 = 45 // 4.5 (reads and writes zip64 archives)

	// Limits for non zip64 files.
	uint16max = (1 << 16) - 1
	uint32max = (1 << 32) - 1

	// Extra header IDs.
	//

     * @param di the starting index in the destination array
     * @return the number of bytes written (4)
     */
    public static int enc_floatbe(final float f, final byte[] dst, final int di) {
        return enc_uint32be(Float.floatToIntBits(f), dst, di);
    }

    /*
     * Decode floating point numbers
     */

    /**
     * Decodes a float value from little-endian byte order.
     *

		if aOK && bOK {
			if len(aA) != len(bA) {
				return false
			}
			for i := range aA {
				if !cmp(aA[i], bA[i]) {
					return false
				}
			}
			return true
		}
		// Try as numbers
		aF, aOK := a.ToFloat()
		bF, bOK := b.ToFloat()

		diff := math.Abs(aF - bF)
		return aOK && bOK && diff < floatCmpTolerance
	}

	var rhs Value
	var err error
	var eltVal *Value
	switch {

     * @param di the starting index in the destination array
     * @return the number of bytes written (4)
     */
    public static int enc_floatbe(final float f, final byte[] dst, final int di) {
        return enc_uint32be(Float.floatToIntBits(f), dst, di);
    }

    /* Decode floating point numbers
     */

    /**
     * Decodes a float value from little-endian byte order.
     *