/**
   * The ClientFailoverSemanticsPolicy provides a means for application developers
   * to explicitly control how and if failover occurs. This Policy will be effective 
   * in the context of any object reference.
   * 
   * The four values of this Policy modify the client ORB behaviour as follws:
   * <ul>
   * <li>ORB_DEFAULT - The ORB behaviour is unmodified from its default.</li>
   * <li>BEST_EFFORT - This value of the Policy provides the client application 
   * with a guaranteed 'best effort' delivery attempt. Normal CORBA invocation 
   * semantics do not require that a compliant ORB must reinvoke requests on 
   * COMPLETED_NO retryable exception conditions or exhaust all available 
   * addresses in an IOR. Compliant client ORBs must provide the following 
   * behaviour under the influence of this Policy value: Each time a client ORB 
   * attempts to invoke a method, it must not abandon the invocation and raise
   * an exception to the client application until it has tried to invoke the 
   * server using all of the alternative addresses in the IOR, or has received 
   * a <i>non-failover</i> condition, or the request duration has expired.</li>
   * <li>AT_LEAST_ONCE - This value behaves as BEST_EFFORT however retryable 
   * exception conditions with status COMPLETED_MAYBE must also be reinvoked.</li>
   * <li>AT_MOST_ONCE - This value behaves as AT_LEAST_ONCE but the client ORB 
   * must transmit an FTRequestServiceContext with the request.</li>
   * </ul>
   */
   enum ClientFailoverSemanticsPolicyValue {
      ORB_DEFAULT,
      BEST_EFFORT,
      AT_LEAST_ONCE,
      AT_MOST_ONCE
   };
   local interface ClientFailoverSemanticsPolicy : CORBA::Policy {
         readonly attribute ClientFailoverSemanticsPolicyValue value;
   };