@Override
	public void copySetting(Settings settings, Settings destSettings) {
		Long l = settings.getLong(SIGN_FORMAT);
		if (l == null) {
			destSettings.clearSetting(SIGN_FORMAT);
		}
		else {
			destSettings.setLong(SIGN_FORMAT, l);
		}
	}
Set, or clear if <code>mode</code> is null, the new mode in the provided settings
@param settings settings object
@param mode new value to assign, or null to clear
Ghidra/Framework/Docking/src/main/java/ghidra/docking/settings/IntegerSignednessFormattingModeSettingsDefinition.java