code: @Override
      public DescribeDirectConnectGatewayAssociationProposalsResult describeDirectConnectGatewayAssociationProposals(
              DescribeDirectConnectGatewayAssociationProposalsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeDirectConnectGatewayAssociationProposals(request);
      }
docs: <p>
  Describes one or more association proposals for connection between a virtual private gateway and a Direct Connect
  gateway.
  </p>
  
  @param describeDirectConnectGatewayAssociationProposalsRequest
  @return Result of the DescribeDirectConnectGatewayAssociationProposals operation returned by the service.
  @throws DirectConnectServerException
  A server-side error occurred.
  @throws DirectConnectClientException
  One or more parameters are not valid.
  @sample AmazonDirectConnect.DescribeDirectConnectGatewayAssociationProposals
  @see <a
  href="http://docs.aws.amazon.com/goto/WebAPI/directconnect-2012-10-25/DescribeDirectConnectGatewayAssociationProposals"
  target="_top">AWS API Documentation</a>