private static void alignRows(DiffLinesValidator leftValidator,
			DiffLinesValidator rightValidator) {

		while (!leftValidator.isDone() || !rightValidator.isDone()) {
			// process the next line in the first list
			validateNextLine(leftValidator, rightValidator);
			validateNextLine(rightValidator, leftValidator);
		}
	}
walk both lists, processing the lines and adding blank lines to align the data
Ghidra/Features/Base/src/main/java/ghidra/app/util/html/diff/DataTypeDiffBuilder.java