- (NSString* )uuid{
CFUUIDRef uuid = CFUUIDCreate( nil );
CFStringRefuuidString =CFUUIDCreateString(nil, uuid );
NSString * result = (NSString *)CFBridgingRelease(CFStringCreateCopy( NULL, uuidString));
CFRelease(uuid);
CFRelease(uuidString);
NSLog(@"%@",result);
return result;
}
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