Extended information frame - PN532?

I have been looking at libraries out on github but coming up short - so not sure its possible?

I am trying to send more than 255 bytes to my PN532 card and have been using SeedStudio/Adafruit libraries for the NFC.

It is send the standard frame of a single byte for length which caps out at 255. Is there code or a way to make it use the extended frame so I could get to two bytes and 64k per the spec?

Or is there a way to recognize chunking if the NDEF message being sent is better to pull 255 bytes at a time until done?

Not exactly sure what you are doing I would consider using array's and then sending them one byte at a time making it is ready for you to send a byte. Possibly if available type statement could solve it. This response is to help you get started in solving your problem, not solve it for you.
Good Luck & Have Fun!
Gil