code: @Override
      public DescribeApplicationResult describeApplication(DescribeApplicationRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeApplication(request);
      }
docs: <p>
  Returns information about a specific Amazon Kinesis Data Analytics application.
  </p>
  <p>
  If you want to retrieve a list of all applications in your account, use the <a>ListApplications</a> operation.
  </p>
  
  @param describeApplicationRequest
  @return Result of the DescribeApplication operation returned by the service.
  @throws ResourceNotFoundException
  Specified application can't be found.
  @throws InvalidArgumentException
  The specified input parameter value is not valid.
  @throws InvalidRequestException
  The request JSON is not valid for the operation.
  @sample AmazonKinesisAnalyticsV2.DescribeApplication
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/kinesisanalyticsv2-2018-05-23/DescribeApplication"
  target="_top">AWS API Documentation</a>