|Description||string||This association represents the binding, in the egress direction, between a ProtocolEndpoint and the last ConditioningService that processes packets before they leave a network device (via that ProtocolEndpoint). This 'last' ConditioningService is ordinarily a scheduler, but it does not have to be. There can be multiple 'last' ConditioningServices for an Endpoint (for example, in the case of a fallback scheduler). Therefore, the cardinality for the Dependent object reference remains 0..n. On the other hand, a single ConditioningService cannot be the last one to process packets for multiple Endpoints. So, the cardinality of the Antecedent object reference is narrowed from 0..n to 0..1.