Where can I check for the Packet content for each type? ProtocolLib

Where can I find the content for each package type on ProtocolLib?, I searched on the thread and on Bukkit Dev, but came out empty on the search. I'm specifically looking for MAP_CHUNK.

The only elements I know that packet contains are:

Code:java

StructureModifier<int[]> intArrays = packet.getSpecificModifier(int[].class);
int[] x = intArrays.read(0);
int[] z = intArrays.read(1);

But I'm not quite sure why those are arrays, I assume its because the server sends multiple chunks at a time right?

Thanks for your time and reading,
Looking forward to your reply,
Debels.