預先授權 preauthorize

    ///
    /// Sets the `List` of resources for which you want to obtain preauthorization decisions.
    ///
    /// Each element in the list must be a `String` representing either the resource ID value or the media RSS fragment which must be agreed with the MVPD.
    ///
    /// This function sets the information only in the context of current `Builder` object instance which is the receiver of this function call.
    ///
    /// To build an actual `PreauthorizeRequest` you can have a look at `Builder`'s function:
    ///
    /// ```
    /// public func build() -> PreauthorizeRequest
    /// ```
    ///
    /// - Parameter resources: The `List` of resources for which you want to obtain preauthorization decisions.
    ///
    /// - Returns: The reference to the same `Builder` object instance which is the receiver of the function call. It does this in order to allow the creation of function chaining.
    ///
    public func setResources(resources: [String]) -> PreauthorizeRequest.Builder



    ///
    /// Sets the features which you want to have them disabled when obtaining preauthorization decisions.
    ///
    /// The list of available features are provided by `PreauthorizeRequest.Feature` enumeration. All features are enabled by default.
    ///
    /// This function sets the information only in the context of current `Builder` object instance which is the receiver of this function call.
    ///
    /// To build an actual `PreauthorizeRequest` you can have a look at `Builder`'s function:
    ///
    /// ```
    /// public func build() -> PreauthorizeRequest
    /// ```
    ///
    /// - Parameter features: The set of features which you want to have them disabled.
    ///
    /// - Returns: The reference to the same `Builder` object instance which is the receiver of the function call. It does this in order to allow the creation of function chaining.
    ///
    public func disableFeatures(features: Set<PreauthorizeRequest.Feature>) -> PreauthorizeRequest.Builder



    ///
    /// Creates and retrieves the reference of a new `PreauthorizeRequest` object instance.
    ///
    /// This function instantiates a new `PreauthorizeRequest` object every time it is called.
    ///
    /// This function uses the values set in advance in the context of current `Builder` object instance which is the receiver of this function call.
    ///
    /// Bear in mind that this function does not produce any side effects, therefore it does not alter the state of the SDK or the state of the `Builder` object instance which is the receiver of this function call.
    ///
    /// It means that successive calls of this function for the same receiver will create different new `PreauthorizeRequest` object instances, but having the same information, in case the values set to the `Builder` where not modified between the calls.
    ///
    /// In case you do not need to update any of the provided information (resources, features, etc.) you may reuse the `PreauthorizeRequest` instance for multiple uses of the `preauthorize` API.
    ///
    /// - Returns: The reference to a new `PreauthorizeRequest` object instance.
    ///
    public func build() -> PreauthorizeRequest

    ///
    /// This feature controls whether to use the information from the AccessEnabler SDK cache or to bypass it and
    /// rely on Adobe Pass server information via a network call.
    ///
    LOCAL_CACHE

    ///
    /// This feature controls whether to use the information from the Adobe Pass server cache or to bypass it and
    /// rely on MVPD server information via a network call.
    ///
    REMOTE_CACHE

    /// Response callback called by the SDK when the preauthorize API request was fulfilled. The result is either a successful or an error result containing a status.
    public func onResponse(result: PreauthorizeResponse)


    /// Failure callback called by the SDK when the preauthorize API request could not be serviced. The result is a failure result containing a status.
    public func onFailure(result: PreauthorizeResponse)

    ///
    /// - Returns: Additional status (state) information in case of error or failure.
    ///   Might hold a `nil` value.
    ///
    public Status getStatus()

    ///
    /// - Returns: The list of preauthorization decisions. One decision for each resource.
    ///            The list might be empty in case of error or failure.
    ///
    public List<Decision> getDecisions()

    ///
    /// - Returns: The HTTP response status code as documented in RFC 7231.
    ///            Might be 0 in case the `Status` comes from the SDK instead of Adobe Pass Authentication services.
    ///
    public int getStatus()

    ///
    /// - Returns: The standard Adobe Pass Authentication services error code.
    ///            Might hold an empty string or a `nil` value.
    ///
    public String getCode()

    ///
    /// - Returns: The human readable message which can be displayed to the end user.
    ///            Might hold an empty string or a `nil` value.
    ///
    public String getMessage()

    ///
    /// - Returns: The detailed message which in some cases is provided by the MVPD authorization endpoints or by Programmer degradation rules.
    ///            Might hold an empty string or a `nil` value.
    ///
    public String getDetails()

    ///
    /// - Returns: The URL that links to more information about why this state/error occurred and possible solutions.
    ///            Might hold an empty string or a `nil` value.
    ///
    public String getHelpUrl()

    ///
    /// - Returns: The unique identifier for this response, which can be used when contacting support to identify specific issues in more complex scenarios.
    ///            Might hold an empty string or a `nil` value.
    ///
    public String getTrace()

    ///
    /// - Returns: The recommended action to remediate the situation.
    ///             - none: Unfortunately there is no predefined action to remediate this issue. This might indicate an improper invocation of the public API
    ///             - configuration: A configuration change is needed through TVE dashboard or by contacting support.
    ///             - application-registration: The application must register itself again.
    ///             - authentication: The user must authenticate or re-authenticate.
    ///             - authorization: The user must obtain authorization for the specific resource.
    ///             - degradation: Some form of degradation should be applied.
    ///             - retry: Retrying the request might solve the issue
    ///             - retry-after: Retrying the request after the indicated period of time might solve the issue.
    ///            Might hold an empty string or a `nil` value.
    ///
    public String getAction()

    ///
    /// This is a getter function.
    ///
    /// - Returns: The resource id for which the decision was obtained.
    ///
    public Status getId()

    ///
    /// This is a getter function.
    ///
    /// - Returns: The value of the flag indicating if the decision is successful or not.
    ///
    public boolean isAuthorized()

    ///
    /// This is a getter function.
    ///
    /// - Returns: Additional status (state) information in case some error has occurred.
    ///            Might hold a `nil` value.
    ///
    public Status getError()

let resources: [String] = ["resource_1", "resource_2", "resource_3"];

let disabledFeatures: Set<PreauthorizationRequest.Feature> = [PreauthorizationRequest.Feature.LOCAL_CACHE];

// Build the Preauthorization API request using the builder from PreauthorizationRequest class`

let request: PreauthorizationRequest = PreauthorizationRequest.Builder()

                  .setResources(resources: resources)


                  .disableFeatures(features: disabledFeatures)  // It is **optional** to disable features. If not used all features are enabled by default.

                  .build();

// Build the AccessEnablerCallback by providing the constructor two callbacks for onResponse and onFailure handling
func onResponseCallback(result: PreauthorizeResponse) -> Void {  //
TODO };

func onFailureCallback(result: PreauthorizeResponse) -> Void {

// TODO

};

let callback: AccessEnablerCallback<PreauthorizeResponse> = AccessEnablerCallback<PreauthorizeResponse>(onResponse: onResponseCallback, onFailure: onFailureCallback);

// Use the preauthorize API
accessEnabler.preauthorize(request, callback);