Chest Inventory

How would I be able to get items from a Chest in a Schematic file?

Code:java

public static Schematic loadScheamtic(File file) {
try {
InputStream fis = new FileInputStream(file);
NBTTagCompound nbtdata = NBTCompressedStreamTools.a(fis);
 
short width = nbtdata.getShort("Width");
short height = nbtdata.getShort("Height");
short length = nbtdata.getShort("Length");
 
byte[] blocks = nbtdata.getByteArray("Blocks");
byte[] data = nbtdata.getByteArray("Data");
 
// NBTTagList entities = nbtdata.getList("Entities");
NBTTagList tileentities = nbtdata.getList("TileEntities"); // THIS IS WHERE THE CHEST INVENTORY IS LOACATED
 
fis.close();
 
return new Schematic(file.getName(), width, height, length, "", blocks, data, null);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}