DiffLines createEmptyClone() {
		return new DiffLines(input, new ArrayList<ValidatableLine>());
	}
A class that holds lines that will be used to generate diffs.  It also has a reference to 
the source of the data so that it can create the correct type of empty lines as needed.
Ghidra/Features/Base/src/main/java/ghidra/app/util/html/diff/DiffLines.java