System/Library/PrivateFrameworks/ClassroomKit.framework
CRKChunkedFile.h
@interface CRKChunkedFile : NSObject {
int mFileDescriptor;
}
+ (void)assertFileDescriptorIsValid:(int)a0;
+ (long long)preferredChunkSizeForFileDescriptor:(int)a0;
- (id)init;
- (id)initWithFileDescriptor:(int)a0;
- (long long)readNextChunkIntoBuffer:(id)a0 error:(id *)a1;
@end