             else {
             return
         }
-        
+
         requestSerializer.accessTokenProvider = nil
-    }    
+    }
 }

        else {
            return
        }
        
        let accessToken = account.accessToken
        requestSerializer.accessTokenProvider = {
            return accessToken
        }
    }
    
    /**
     Called when a client is logged out and the current account should be cleared from the session manager
     */

/** `VimeoSessionManager` handles networking and serialization for raw HTTP requests.  It is a direct subclass of `AFHTTPSessionManager` and it's designed to be used internally by `VimeoClient`.  For the majority of purposes, it would be better to use `VimeoClient` and a `Request` object to better encapsulate this logic, since the latter provides richer functionality overall.
 */
final public class VimeoSessionManager: AFHTTPSessionManager, SessionManaging {

    // MARK: - Public

    /// Getter and setter for acceptableContentTypes propert on response serializer
    @objc public var acceptableContentTypes: Set<String>? {
        get { return responseSerializer.acceptableContentTypes }
        set { responseSerializer.acceptableContentTypes = newValue }
    }

    // MARK: - Initialization

    /**
     Creates a new session manager

     - parameter baseUrl: The base URL for the HTTP client
     - parameter sessionConfiguration: Object describing the URL session policies for this session manager
     - parameter requestSerializer:    Serializer to use for all requests handled by this session manager

     - returns: an initialized `VimeoSessionManager`
     */
    required public init(
