*
     * @param in the input stream to read from
     * @param b the buffer to read into
     * @param off the offset in the buffer to start writing
     * @param len the number of bytes to read
     * @return the number of bytes actually read
     * @throws IOException if an I/O error occurs
     */
    public static int readn(final InputStream in, final byte[] b, final int off, final int len) throws IOException {

 * primitive utilities</a>.
 *
 * @author Louis Wasserman
 * @author Colin Evans
 * @since 11.0
 */
@GwtCompatible
public final class UnsignedLong extends Number implements Comparable<UnsignedLong> {

  private static final long UNSIGNED_MASK = 0x7fffffffffffffffL;

  public static final UnsignedLong ZERO = new UnsignedLong(0);

		default:
			bts, err = msgp.Skip(bts)
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *nsScannerOptions) Msgsize() (s int) {
	s = 1 + 3 + msgp.StringPrefixSize + len(z.DiskID) + 2 + msgp.IntSize + 2
	if z.Cache == nil {
		s += msgp.NilSize
	} else {

	Languages []Language `gorm:"many2many:UserSpeak;"`
	Friends   []*User    `gorm:"many2many:user_friends;"`
	Active    bool
}

type Account struct {
	gorm.Model
	UserID sql.NullInt64
	Number string
}

type Pet struct {
	gorm.Model
	UserID *uint
	Name   string
	Toy    Toy `gorm:"polymorphic:Owner;"`
}

type Toy struct {
	gorm.Model
	Name      string
	OwnerID   string

    }

    /**
     * Creates a simple circuit breaker
     *
     * @param name the circuit breaker name
     * @param failureThreshold number of consecutive failures to open circuit
     * @param successThreshold number of successes in half-open to close circuit
     * @param timeoutMillis timeout before attempting to close open circuit
     */

    /** Whether to extract top-level fields as metadata. */
    protected boolean extractMetadata = true;

    /** Prefix for flattened nested keys. */
    protected String nestedKeySeparator = ".";

    /** Maximum number of array elements to extract. */
    protected int maxArrayElements = 100;

    /**
     * Constructs a new JsonExtractor.
     */
    public JsonExtractor() {
        super();
    }

    @Override

     * @param element the element
     */
    public void add(final int index, final E element) {
        getEntry(index).addBefore(element);
    }

    /**
     * Returns the number of elements.
     *
     * @return the number of elements
     */
    public int size() {
        return size;
    }

    /**
     * Checks if the list is empty.
     *

    // for error page

    /**
     * Query string parameter for error page fallback.
     * Contains the original search query if redirection fails.
     */
    public String q;

    /**
     * Number of results parameter for error page fallback.
     * Specifies how many results to display if redirection fails.
     */
    public String num;

    /**
     * Sort parameter for error page fallback.

        this(cfg.getBufferCacheSize(), cfg.getMaximumBufferSize());
    }

    /**
     * Constructs a buffer cache with specified parameters.
     *
     * @param maxBuffers the maximum number of buffers to cache
     * @param maxSize the size of each buffer in bytes
     *
     */
    public BufferCacheImpl(final int maxBuffers, final int maxSize) {
        this.cache = new Object[maxBuffers];

    private final int flags;

    /**
     * Constructs an SMB2 lock element with the specified parameters.
     *
     * @param offset the byte offset in the file where the lock begins
     * @param length the number of bytes to lock
     * @param flags the lock flags (combination of SMB2_LOCKFLAG_* constants)
     */
    public Smb2Lock(final long offset, final long length, final int flags) {
        this.offset = offset;