public int getUnusedField() {
		if (unusedField != 0) {
			Msg.warn(this, "Fragment has non-zero \"unused\" field");
		}
		return unusedField;
	}
Represents a SquashFS fragment
@param reader A binary reader with pointer index at the start of the fragment data
@throws IOException Any read operation failure
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/squashfs/SquashFragment.java