@Override
	public int compareTo(SequenceItem arg0) {
		if (index != arg0.getIndex()) {
			return index - arg0.getIndex();
		}
		return symbol.compareTo(arg0.getSymbol());
	}
Generates a String from a list of {@link SequenceItem}s with each missing {@link SequenceItem} replaces by a "."
@param itemList list of items
@param totalLength length of String to write, including each "."
@return the String
Ghidra/Features/BytePatterns/src/main/java/ghidra/closedpatternmining/SequenceItem.java