'Register all mechanism drivers.
This method should only be called once in the MechanismManager
constructor.'

def _register_mechanisms(self):

    for ext in self:
        self.mech_drivers[ext.name] = ext
        self.ordered_mech_drivers.append(ext)
    LOG.info(_LI('Registered    mechanism    drivers:    %s'), [driver.name for driver in self.ordered_mech_drivers])
