@Override
	public boolean allChoicesAreSame() {
		if (rows == null || rows.isEmpty()) {
			return false;
		}
		int firstChoice = -1;
		Iterator<ChoiceRow> iter = rows.iterator();
		while (iter.hasNext()) {
			ChoiceRow cr = iter.next();
			int currentChoice = cr.getChoice();
			if (cr.hasChoices()) {
				if (currentChoice == 0) {
					return false;
				}
				if (firstChoice == -1) {
					firstChoice = currentChoice;
				}
				else if (currentChoice != firstChoice) {
					return false;
				}
			}
		}
		return (firstChoice != -1);
	}
Returns true if the user made a selection for every conflict in the table and 
made the same choice for every row.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/VariousChoicesPanel.java