code: @Override
      public DescribeParametersResult describeParameters(DescribeParametersRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeParameters(request);
      }
docs: <p>
  Returns the detailed parameter list for a particular parameter group.
  </p>
  
  @param describeParametersRequest
  @return Result of the DescribeParameters operation returned by the service.
  @throws ParameterGroupNotFoundException
  The specified parameter group does not exist.
  @throws ServiceLinkedRoleNotFoundException
  @throws InvalidParameterValueException
  The value for a parameter is invalid.
  @throws InvalidParameterCombinationException
  Two or more incompatible parameters were specified.
  @sample AmazonDax.DescribeParameters
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/dax-2017-04-19/DescribeParameters" target="_top">AWS API
  Documentation</a>