code: @Override
      public DescribeVirtualGatewaysResult describeVirtualGateways(DescribeVirtualGatewaysRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeVirtualGateways(request);
      }
docs: <p>
  Lists the virtual private gateways owned by the AWS account.
  </p>
  <p>
  You can create one or more AWS Direct Connect private virtual interfaces linked to a virtual private gateway.
  </p>
  
  @param describeVirtualGatewaysRequest
  @return Result of the DescribeVirtualGateways operation returned by the service.
  @throws DirectConnectServerException
  A server-side error occurred.
  @throws DirectConnectClientException
  One or more parameters are not valid.
  @sample AmazonDirectConnect.DescribeVirtualGateways
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/directconnect-2012-10-25/DescribeVirtualGateways"
  target="_top">AWS API Documentation</a>