@Override
	public boolean hasValue(Settings setting) {
		return setting.getValue(SIGN_FORMAT) != null;
	}
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