iOSアプリケーション起動時にバンドルからファイルをコピーしたいのですが、コンパイルエラーになります。

import UIKit
import RealmSwift
import Foundation

class dic: Object {
    dynamic var ID = 0
    dynamic var yomi = ""
    dynamic var kigou = ""
    dynamic var date = NSDate(timeIntervalSince1970: 1)

    override static func primaryKey() -> String? {
        return "ID"
    }
}


class KeyboardViewController: UIInputViewController, UICollectionViewDelegate, UICollectionViewDataSource {


@IBOutlet var nextKeyboardButton: UIButton!

private var lexicon: UILexicon!
var myCollectionView : UICollectionView!

var button11: UIButton!
var button12: UIButton!
var fFastBoot = true
var fPri = CGFloat(20)
var ifontSize = 18.0
var RPath = ""
var sTextNum: Int = 0
var sTexst: String = "12345"
var cellNum: Int = 0
var tText:String = ""
var sText:String = ""
var listYomi: [String] = [];
var listKigou: [String] = [];
var listDate: [NSDate] = [];
var layout = UICollectionViewFlowLayout()


// Portrait表示におけるキーボードの高さ
private var portraitHeight: CGFloat = 190.0
private var portraitWidth: CGFloat!

// Landscape表示におけるキーボードの高さ
private var landscapeHeight: CGFloat = 100.0
private var landscapeWidth: CGFloat!


override func updateViewConstraints() {
    super.updateViewConstraints()

    // Add custom view sizing constraints here
}

func createPath() -> String {

    let docsPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.LibraryDirectory , NSSearchPathDomainMask.UserDomainMask, true)[0]
    let databaseStr = "/Dictionary.realm"
    let dbPath = docsPath.stringByAppendingString(databaseStr)

    // BEGING MODIFICATION
    let fileMan = NSFileManager.defaultManager()
    if !(fileMan.fileExistsAtPath(dbPath)) {    // The database does not already exist in Documents directory
        if let source = NSBundle.mainBundle().resourcePath?.stringByAppendingString(databaseStr) {
            if !(fileMan.fileExistsAtPath(source)) {
                print("RealmDB - file \(databaseStr) not found in bundle")
            } else {
                var error:NSError?

                if !(fileMan.copyItemAtPath(source, toPath: dbPath)) {
                    print("RealmDB - failed to copy writable version of DB!")
                    print("Error - \(error!.localizedDescription)")
                }
            }
        }
    }
    // END MODIFICATION

    return dbPath
}

override func viewDidLoad() {
    super.viewDidLoad()

    createPath()
    print(createPath())

    // Perform custom UI setup here
    self.nextKeyboardButton = UIButton(type: .System)

    self.nextKeyboardButton.setTitle(NSLocalizedString("Next Keyboard", comment: "Title for 'Next Keyboard' button"), forState: .Normal)
    self.nextKeyboardButton.sizeToFit()
    self.nextKeyboardButton.translatesAutoresizingMaskIntoConstraints = false

    self.nextKeyboardButton.addTarget(self, action: "advanceToNextInputMode", forControlEvents: .TouchUpInside)

    self.view.addSubview(self.nextKeyboardButton)

    let nextKeyboardButtonLeftSideConstraint = NSLayoutConstraint(item: self.nextKeyboardButton, attribute: .Left, relatedBy: .Equal, toItem: self.view, attribute: .Left, multiplier: 1.0, constant: 0.0)
    let nextKeyboardButtonBottomConstraint = NSLayoutConstraint(item: self.nextKeyboardButton, attribute: .Bottom, relatedBy: .Equal, toItem: self.view, attribute: .Bottom, multiplier: 1.0, constant: 0.0)
    self.view.addConstraints([nextKeyboardButtonLeftSideConstraint, nextKeyboardButtonBottomConstraint])

    // CollectionViewのレイアウトを生成.
    let layout = UICollectionViewFlowLayout()
    // サイズの設定
    layout.itemSize.height = 10
    layout.itemSize.width = 10
    // Cell一つ一つの大きさ.
    layout.itemSize = CGSizeMake(25, 25)
    // Cellのマージン.
    layout.sectionInset = UIEdgeInsetsMake(2, 2, 2, 2)
    // セクション毎のヘッダーサイズ.
    layout.headerReferenceSize = CGSizeMake(0,0)
    // 横スクロール
    layout.scrollDirection = .Horizontal  //.Vertical

    // CollectionViewを生成.
    myCollectionView = UICollectionView(frame: self.view.frame, collectionViewLayout: layout)
    myCollectionView.frame.size.height = 30
    myCollectionView.frame.size.width = 100
    myCollectionView.frame.offset(dx: 2, dy: 2)
    myCollectionView.backgroundColor = UIColor(red: 0.9, green: 0.9, blue: 0.9, alpha: 1.0)

    myCollectionView.delegate = self
    print(myCollectionView.delegate)
    myCollectionView.dataSource = self
    print(myCollectionView.dataSource)

    // Cellに使われるクラスを登録.
    myCollectionView.registerClass(CustomUICollectionViewCell.self, forCellWithReuseIdentifier: "MyCell")

    myCollectionView.sizeToFit()
    print(myCollectionView.frame)

    let inputText = ")"

    let realm = try! Realm(path: createPath())
    let results = realm.objects(dic).filter("yomi BEGINSWITH %@", inputText).sorted("date", ascending: false)
    cellNum = 0
    print(realm)
    print(results)
    for result in results {
        print(result.kigou)
        listYomi = listYomi + [result.yomi]
        listKanji = listKigou + [result.kigou]
        listDate = listDate + [result.date]
        cellNum = cellNum + 1
    }
    print("test2")

    if cellNum == 0{
    }else{
        cellNum = cellNum - 1
    }
    print("test3")

    InsertText("(")
    view.addSubview(myCollectionView)

    myCollectionView.reloadData()

}

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)

    let heightConstraint = NSLayoutConstraint(item: view, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 0, constant: 500)
    view.addConstraint(heightConstraint)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated
}

override func viewDidLayoutSubviews() {
    var myNativeBoundSize: CGSize = UIScreen.mainScreen().bounds.size
    let myNativeBoundSizeStrW: CGFloat = myNativeBoundSize.width
    let myNativeBoundSizeStrH: CGFloat = myNativeBoundSize.height

    var myWidth = myNativeBoundSize.width
    var myHeight = myNativeBoundSize.height
    // 向きの判定.

    if isLandscape() { // Landscapeだったら、
        let orientation = "Landscape"
        // Landscape用の viewを表示する。
        //print(orientation)

    } else { // Portraitだったら、
        let orientation = "Portrait"
        // Portrait用の viewを表示する。
        //print(orientation)
    }
    var sKishu = "iPad"
    if String(self.view.bounds.size) == "(320.0, 330.0)" {
        // iPhone, iPod touch
        sKishu = "iPhone"
        myWidth = 30
    }else if String(self.view.bounds.size) == "(768.0, 500.0)" {
        myCollectionView.frame.size.width = 764
    }else if String(self.view.bounds.size) == "(1024.0, 500.0)" {
        myCollectionView.frame.size.width = 1020
    }
    print(String(self.view.bounds.size))
    //print(sKishu)

    if CGFloat(myNativeBoundSizeStrH) == CGFloat(1024.0){
        myWidth = myNativeBoundSizeStrW / CGFloat(13)
        myHeight = myNativeBoundSizeStrH / CGFloat(20)
        //print("iPad縦")
    }else if CGFloat(myNativeBoundSizeStrH) == CGFloat(768.0){
        myWidth = myNativeBoundSizeStrW / CGFloat(13)
        myHeight = myNativeBoundSizeStrH / CGFloat(11)
        //print("iPad横")
    }else{
        myWidth = myNativeBoundSizeStrW / CGFloat(10)
        myHeight = myNativeBoundSizeStrH / CGFloat(10)
        //print("Non")
    }

    if fFastBoot == false {
        self.button11.frame = CGRectMake(0,3 + fPri, myWidth - CGFloat(2) ,myHeight - CGFloat(6))
        self.button12.frame = CGRectMake(myWidth, 3 + fPri, myWidth - CGFloat(2), myHeight - CGFloat(6))
    }else{

        self.button11 = UIButton(type: .System)
        self.button11 = UIButton(frame: CGRectMake(0, 3 + fPri, myWidth - CGFloat(2) ,myHeight - CGFloat(6)))
        self.button11.setTitleColor(UIColor.blackColor(), forState: .Normal)
       self.button11.addTarget(self, action: "btnUp11:", forControlEvents:.TouchUpInside)
        self.button11.addTarget(self, action: "btnDown11:", forControlEvents:.TouchDown)

        self.button12 = UIButton(type: .System)
        self.button12 = UIButton(frame: CGRectMake(myWidth, 3 + fPri, myWidth - CGFloat(2), myHeight - CGFloat(6)))
        self.button12.setTitleColor(UIColor.blackColor(), forState: .Normal)
        self.button12.addTarget(self, action: "btnUp12:", forControlEvents:.TouchUpInside)
        self.button12.addTarget(self, action: "btnDown12:", forControlEvents:.TouchDown)

    }

    self.button11.setTitle(NSLocalizedString(String(myNativeBoundSizeStrH), comment: "("), forState: .Normal)
    self.button12.setTitle(NSLocalizedString(String(myNativeBoundSizeStrW), comment: ")"), forState: .Normal)
    if fFastBoot == true {

        self.button11.titleLabel?.font = UIFont.systemFontOfSize(CGFloat(ifontSize))
        self.button12.titleLabel?.font = UIFont.systemFontOfSize(CGFloat(ifontSize))

        self.view.addSubview(self.button11)
        self.view.addSubview(self.button12)
        fFastBoot = false
    }
}

func btnDown11(sender: UIButton){
    //fDub = false
    self.button11.backgroundColor = UIColor.blackColor()
}
func btnUp11(sender: AnyObject){
    self.button11.backgroundColor = UIColor.whiteColor()

    let tText = "あ"
    InsertText(tText)
}

func InsertText (str: String){
    tText = ""
    sTextNum = sTextNum + 1
    sText = sText + str
    let proxy = textDocumentProxy
    proxy.insertText(str)
    serchText(str)
    myCollectionView.reloadData()
}

private func isWidth() -> CGFloat {
    // 現時点で Landscape表示が適当かどうかを判断する。
    let screenSize = UIScreen.mainScreen().bounds.size
    let screenW = self.view.bounds.size.width
    return screenW
}

private func isLandscape() -> Bool {
    // 現時点で Landscape表示が適当かどうかを判断する。
    let screenSize = UIScreen.mainScreen().bounds.size
    let screenH = screenSize.height
    let screenW = screenSize.width
    let isLandscapeNow =  !(self.view.frame.size.width ==
        screenW * ((screenW < screenH) ? 1 : 0) +
        screenH * ((screenW > screenH) ? 1 : 0))
    return isLandscapeNow
}

override func textWillChange(textInput: UITextInput?) {
    // The app is about to change the document's contents. Perform any preparation here.
}

override func textDidChange(textInput: UITextInput?) {
    // The app has just changed the document's contents, the document context has been updated.

    var textColor: UIColor
    let proxy = self.textDocumentProxy
    if proxy.keyboardAppearance == UIKeyboardAppearance.Dark {
        textColor = UIColor.whiteColor()
    } else {
        textColor = UIColor.blackColor()
    }
    self.nextKeyboardButton.setTitleColor(textColor, forState: .Normal)
}

// セルの幅自動修正
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
    var size: CGSize = listKanji[indexPath.row].sizeWithAttributes([NSFontAttributeName: UIFont.systemFontOfSize(20.0)])
    print(CGSizeMake(size.width + 20.0, 25))
    return CGSizeMake(size.width + 20.0, 25) //self.flowLayout.itemSize.height)
}

/*
Cellが選択された際に呼び出される
*/
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
    print("Num: \(indexPath.row)")
    print(listKigou[indexPath.row])
}

/*
Cellの総数を返す
*/
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    print(cellNum)
    return cellNum
}

/*
Cellに値を設定する
*/
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

    let cell : CustomUICollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier("MyCell", forIndexPath: indexPath) as! CustomUICollectionViewCell
    //cell.textLabel?.text = indexPath.row.description
    print(indexPath.row)
    cell.textLabel?.text = listKigou[indexPath.row]
    return cell
}

func serchText(inputText: NSString){
    let realm = try! Realm(path: createPath())
    let results = realm.objects(dic).filter("yomi BEGINSWITH %@", inputText).sorted("date", ascending: false)
    cellNum = 0
    for result in results {
        print(result.kigou)
        listYomi = listYomi + [result.yomi]
        listKigou = listKanji + [result.kigou]
        listDate = listDate + [result.date]
        cellNum = cellNum + 1
    }
    if cellNum == 0{
    }else{
        cellNum = cellNum - 1
    }
}
}

class CustomUICollectionViewCell : UICollectionViewCell{

    var textLabel : UILabel?

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override init(frame: CGRect) {
        super.init(frame: frame)

        // UILabelを生成.
        textLabel = UILabel(frame: CGRectMake(0, 0, frame.width, frame.height))
        textLabel?.text = "nil"
        textLabel?.backgroundColor = UIColor.whiteColor()
        textLabel?.textAlignment = NSTextAlignment.Center

        // Cellに追加.
        self.contentView.addSubview(textLabel!)
    }
}

下記の箇所でコンパイルエラーが起こり、ビルドできません。

fileMan.copyItemAtPath