code: @Override
      public DescribeRouteTablesResult describeRouteTables(DescribeRouteTablesRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeRouteTables(request);
      }
docs: <p>
  Describes one or more of your route tables.
  </p>
  <p>
  Each subnet in your VPC must be associated with a route table. If a subnet is not explicitly associated with any
  route table, it is implicitly associated with the main route table. This command does not return the subnet ID
  for implicit associations.
  </p>
  <p>
  For more information, see <a
  href="https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Route_Tables.html">Route Tables</a> in the
  <i>Amazon Virtual Private Cloud User Guide</i>.
  </p>
  
  @param describeRouteTablesRequest
  @return Result of the DescribeRouteTables operation returned by the service.
  @sample AmazonEC2.DescribeRouteTables
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DescribeRouteTables" target="_top">AWS API
  Documentation</a>