code: @Override
      public DescribeVpcsResult describeVpcs(DescribeVpcsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeVpcs(request);
      }
docs: <p>
  Describes one or more of your VPCs.
  </p>
  
  @param describeVpcsRequest
  @return Result of the DescribeVpcs operation returned by the service.
  @sample AmazonEC2.DescribeVpcs
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DescribeVpcs" target="_top">AWS API
  Documentation</a>