code: @Override
      public DescribeConfigRulesResult describeConfigRules(DescribeConfigRulesRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeConfigRules(request);
      }
docs: <p>
  Returns details about your AWS Config rules.
  </p>
  
  @param describeConfigRulesRequest
  @return Result of the DescribeConfigRules operation returned by the service.
  @throws NoSuchConfigRuleException
  One or more AWS Config rules in the request are invalid. Verify that the rule names are correct and try
  again.
  @throws InvalidNextTokenException
  The specified next token is invalid. Specify the <code>nextToken</code> string that was returned in the
  previous response to get the next page of results.
  @sample AmazonConfig.DescribeConfigRules
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/config-2014-11-12/DescribeConfigRules" target="_top">AWS API
  Documentation</a>