'Return ExternalServiceActionsGroup created from an xml element.'

@classmethod
def from_elem(self, elem, parent=None):

    if (elem is not None):
        name = elem.get('name')
        label = elem.get('label')
        rval = ExternalServiceActionsGroup(parent, name, label=label)
        rval.load_sub_elems(elem)
    else:
        rval = ExternalServiceActionsGroup(None, None)
    return rval
