public String toString()
    {
        String str = super.toString();
        
        str += "\nMaximum mass: " + getMaxMass();
        str += "\nMaximum volume: " + getMaxVolume();
        
        str += "\nContents:\n";
        if(getContents() == null || getContents().size() == 0) {str += "None\n";}
        else
        {
        	for(ContainableSimWo conSimWo : getContents())
        		str += conSimWo.getName() + "\n";
        }
        
        return str;
    }