logInfo( "Replacing actuator type model: "
if ( _logger.isInfoEnabled() ) _logger.info( "Replacing actuator type model: "
    ActuatorTypeModel addActuatorTypeModel( ActionTechSpecInterface action_ts )            throws BelievabilityException    {                if ( action_ts == null )            throw new BelievabilityException                    ( "AssetTypeModel.addActuatorTypeModel()",                      "Cannot add null action tech spec" );        ActuatorTypeModel a_model                = new ActuatorTypeModel( action_ts, this );        if ( _actuator_model_set.get( a_model.getName()) != null )            logInfo( "Replacing actuator type model: "                        + a_model.getName() );                _actuator_model_set.put( a_model.getName(),                                 a_model );                return a_model;    } // method addActuatorTypeModel