private void notifyListeners() {
		for (ListingDiffChangeListener listener : listeners) {
			listener.listingDiffChanged();
		}
	}
Changes the setting indicating if operand registers that differ other than in size 
should be ignored when determining code unit differences.
@param ignore true means code unit differences should ignore operand register differences
other than in size.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ListingDiff.java