[Tinyos-help] What's this sentence for in HplAt45dbIOC.nc

[SANG Junjun]

There is a sentence in the file
tos/platforms/mica2/chips/at45db/HplAt45dbIOC.nc, line39
  HplAt45dbIOP.InInterrupt -> HplAtm128InterruptC.Int2;
What does this mean? Can we use Int3 or Int4?

-- 
Best Regards,
SANG JUNJUN
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