WKNavigationResponse

@interface WKNavigationResponse : NSObject

/*! @abstract A Boolean value indicating whether the frame being navigated is the main frame.
 */
@property (nonatomic, readonly, getter=isForMainFrame) BOOL forMainFrame;

/*! @abstract The frame's response.
 */
@property (nonatomic, readonly, copy) NSURLResponse *response;

/*! @abstract A Boolean value indicating whether WebKit can display the response's MIME type natively.
 @discussion Allowing a navigation response with a MIME type that can't be shown will cause the navigation to fail.
 */
@property (nonatomic, readonly) BOOL canShowMIMEType;

@end