@class NSLock, NSMutableDictionary, NSObject;
@protocol OS_dispatch_queue;

@interface MFAttachmentManager : NSObject {
    NSObject<OS_dispatch_queue> *_arrayAccessQueue;
    NSMutableDictionary *_providers;
    NSMutableDictionary *_attachments;
    NSMutableDictionary *_metadata;
    NSLock *_metaDataLock;
    NSObject<OS_dispatch_queue> *_imageScalingQueue;
}

+ (id)defaultManager;
+ (id)allManagers;
+ (id)supportedDocumentUTIs;

- (void)removeProvider:(id)a0;
- (id)init;
- (void)dealloc;
- (void)loadAttachmentURL:(id)a0 forContextID:(id)a1;
- (id)_contentIDForAttachment:(id)a0;
- (id)_dataProviderForAttachmentURL:(id)a0 error:(id *)a1;
- (void)_fetchCompletedForAttachment:(id)a0 error:(id)a1;
- (id)_filePathForAttachment:(id)a0;
- (BOOL)_setupAttachment:(id)a0 withMimeBody:(id)a1 error:(id *)a2;
- (void)addProvider:(id)a0 forBaseURL:(id)a1;
- (id)attachmentForCID:(id)a0;
- (id)attachmentForContentID:(id)a0;
- (id)attachmentForContentID:(id)a0 preferredSchemes:(id)a1;
- (id)attachmentForData:(id)a0 mimeType:(id)a1 fileName:(id)a2 contentID:(id)a3 context:(id)a4;
- (id)attachmentForTextAttachment:(id)a0 error:(id *)a1;
- (id)attachmentForURL:(id)a0 error:(id *)a1;
- (id)attachmentForURL:(id)a0 withMimeBody:(id)a1 error:(id *)a2;
- (id)attachmentsForContext:(id)a0;
- (id)attachmentsForURLs:(id)a0 error:(id *)a1;
- (void)clearMetadataForAttachment:(id)a0;
- (void)fetchDataForAttachment:(id)a0;
- (void)fetchDataSynchronouslyForAttachment:(id)a0;
- (id)imageScalingQueue;
- (id)metadataForAttachment:(id)a0 forKey:(id)a1;
- (void)recordPasteboardAttachmentsForURLs:(id)a0 forContextID:(id)a1;
- (void)recordUndoAttachmentsForURLs:(id)a0 forContextID:(id)a1;
- (void)removeAttachmentForURL:(id)a0;
- (void)removeProviderForBaseURL:(id)a0;
- (void)setContentID:(id)a0 forAttachment:(id)a1;
- (void)setMetadataForAttachment:(id)a0 toValue:(id)a1 forKey:(id)a2;
- (BOOL)updateAttachment:(id)a0 withNewData:(id)a1;
- (id)_fetchDataForAttachment:(id)a0 withProvider:(id)a1 syncLock:(id *)a2;
- (void)cancelFetchForAttachment:(id)a0;

@end