private int calculateGroupSize(Ext4SuperBlock superBlock) {
		int logBlockSize = superBlock.getS_log_block_size();
		blockSize = (int) Math.pow(2, 10 + logBlockSize);
		int groupSize = blockSize * superBlock.getS_blocks_per_group();
		return groupSize;
	}
This method allows for EXT4 files larger than 2GB to be imported as 2 (or 3) separate programs.
Then if both programs are opened (and have the same base name), then both will be analyzed.
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/ext4/NewExt4Analyzer.java