def __init__(self, targets=[]):
        '''@param targets Orderings and conditions.'''
        validate_attribute(targets, 'message_sending.Targets',
                           expected_type=list, required=False)
        self._targets = targets
def __init__ ( self , targets = [ ] ) : validate_attribute ( targets , 'message_sending.Targets' , expected_type = list , required = False ) self . _targets = targets
@param targets Orderings and conditions.