/// <summary>
 /// <para>Describes one or more of the Offerings that are currently available for creating new Connections. The results include offerings for
 /// all regions.</para> <para>To order a new Connection you will need to select a specific Offering ID.</para>
 /// </summary>
 /// 
 /// <param name="describeOfferingsRequest">Container for the necessary parameters to execute the DescribeOfferings service method on
 ///          AmazonDirectConnect.</param>
 /// 
 /// <returns>The response from the DescribeOfferings service method, as returned by AmazonDirectConnect.</returns>
 /// 
 /// <exception cref="DirectConnectServerException"/>
 /// <exception cref="DirectConnectClientException"/>
 public DescribeOfferingsResponse DescribeOfferings(DescribeOfferingsRequest describeOfferingsRequest)
 {
     IAsyncResult asyncResult = invokeDescribeOfferings(describeOfferingsRequest, null, null, true);
     return EndDescribeOfferings(asyncResult);
 }
 IAsyncResult invokeDescribeOfferings(DescribeOfferingsRequest describeOfferingsRequest, AsyncCallback callback, object state, bool synchronized)
 {
     IRequest irequest = new DescribeOfferingsRequestMarshaller().Marshall(describeOfferingsRequest);
     var unmarshaller = DescribeOfferingsResponseUnmarshaller.GetInstance();
     AsyncResult result = new AsyncResult(irequest, callback, state, synchronized, signer, unmarshaller);
     Invoke(result);
     return result;
 }
 /// <summary>
 /// Initiates the asynchronous execution of the DescribeOfferings operation.
 /// <seealso cref="Amazon.DirectConnect.AmazonDirectConnect.DescribeOfferings"/>
 /// </summary>
 /// 
 /// <param name="describeOfferingsRequest">Container for the necessary parameters to execute the DescribeOfferings operation on
 ///          AmazonDirectConnect.</param>
 /// <param name="callback">An AsyncCallback delegate that is invoked when the operation completes.</param>
 /// <param name="state">A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback
 ///          procedure using the AsyncState property.</param>
 /// 
 /// <returns>An IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking EndDescribeOfferings
 ///         operation.</returns>
 public IAsyncResult BeginDescribeOfferings(DescribeOfferingsRequest describeOfferingsRequest, AsyncCallback callback, object state)
 {
     return invokeDescribeOfferings(describeOfferingsRequest, callback, state, false);
 }