def METHOD_NAME(self):
    '''
    Determines the position ('U' for upper and 'L' for lower) of the ToR.
    The upper ToR is always the first ToR listed in the testbed file
    '''
    self.dual_tor_facts['positions'] = {
        'upper': self.testbed_facts['duts'][0], 'lower': self.testbed_facts['duts'][1]}