Converts the inputted list tag to Python.
        
        :param      elem | <xml.etree.ElementTree>
        
        :return     <list>

def load(self, elem):
        """
        Converts the inputted list tag to Python.
        
        :param      elem | <xml.etree.ElementTree>
        
        :return     <list>
        """
        self.testTag(elem, 'list')
        out = []
        for xitem in elem:
            out.append(XmlDataIO.fromXml(xitem))
        return out