public void setFormatMode(Settings settings, SignednessFormatMode mode) {
		if (mode == null) {
			settings.clearSetting(SIGN_FORMAT);
			return;
		}
		settings.setLong(SIGN_FORMAT, mode.ordinal());
	}
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