 
   func browser(browser: MCNearbyServiceBrowser,
                foundPeer peerID: MCPeerID,
-                         withDiscoveryInfo info: [String: String]?) {
+               withDiscoveryInfo info: [String: String]?) {
     do {
       let peer = try Peer(mcPeerID: peerID)
       availablePeers.modify { $0[peer] = peerID }

   Begins listening for `serviceType` provided in init method.

   This method sets `listening` value to `true`.

   This method does not change state if `Browser` is already listening.

   - parameters:
   - startListeningErrorHandler:
   Called when a browser failed to start browsing for peers.
   */
  func startListening(startListeningErrorHandler: ErrorType -> Void) {
    if !listening {

   Stops listening for the `serviceType` provided in init method.

   This method sets `listening` value to `false`.
   It does not change state if `Browser` is already not listening.
   */
  func stopListening() {
    browser.delegate = nil
