     - returns: A Swiftly object representing the desired layout.
     */
     public static func Center(item: AnyObject? = nil) -> Swiftly {
-        return Swiftly(attributes: [.CenterX, .CenterY], fromItem: item)
+        return Swiftly(attributes: [.CenterX, .CenterY], toItem: item)
     }
     /**
     A combined layout representing the height and width of a view's alignment rectangle.

*/
public func <=(left: Swiftly, right: Swiftly) -> Swiftly {
    var result = left
    result.toItem = right.fromItem

    if let attrs = right.attributes {
        result.otherAttributes = attrs

    - returns: A Swiftly object representing the desired layout.
    */
    public static func Trailing(item: AnyObject? = nil) -> Swiftly {
        return Swiftly(.Trailing, toItem: item)
    }
    /**
    A layout representing the height of a view's alignment rectangle.
