code: @Override
      public DescribeSubnetsResult describeSubnets(DescribeSubnetsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeSubnets(request);
      }
docs: <p>
  Describes one or more of your subnets.
  </p>
  <p>
  For more information, see <a href="https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.html">Your
  VPC and Subnets</a> in the <i>Amazon Virtual Private Cloud User Guide</i>.
  </p>
  
  @param describeSubnetsRequest
  @return Result of the DescribeSubnets operation returned by the service.
  @sample AmazonEC2.DescribeSubnets
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DescribeSubnets" target="_top">AWS API
  Documentation</a>