private boolean sameType(CodeUnit codeUnit1, CodeUnit codeUnit2) {
		if (codeUnit1 == null) {
			return (codeUnit2 == null);
		}
		if (codeUnit2 == null) {
			return false;
		}
		return (codeUnit1 instanceof Instruction && codeUnit2 instanceof Instruction) ||
			(codeUnit1 instanceof Data && codeUnit2 instanceof Data);
	}
Determines if the entire set of operands should indicate that it differs.
If the code units aren't the same type then the entire set of operands is considered different.
Also if the number of operands differs then as far as we're concerned the entire set differs.
@param codeUnit1 the first code unit
@param codeUnit2 the second code unit
@return true if we should indicate that all operands differ.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ListingDiff.java