 /**
  * Concurrency is set via MXML based access to RPC services to indicate how to handle multiple
  * calls to the same service. The default concurrency value is <code>multiple</code>.
+ *  
+ *  @langversion 3.0
+ *  @playerversion Flash 9
+ *  @playerversion AIR 1.1
+ *  @productversion Flex 3
  */
 public final class Concurrency
 {

     * Only the result or fault for the most recent request will be dispatched on the client. 
     * This may simplify event handling in the client application, but care should be taken to only use 
     * this mode when results or faults for requests may be safely ignored.
     */
    public static const LAST:String = "last";

    /**
     * Existing requests are not cancelled, and the developer is responsible for ensuring
     * the consistency of returned data by carefully managing the event stream.
     */
    public static const MULTIPLE:String = "multiple";


    /**
     * Making only one request at a time is allowed on the method; additional requests made 
     * while a request is outstanding are immediately faulted on the client and are not sent to the server.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    public static const SINGLE:String = "single";
}
