code: @Override
      public DescribeTaskDefinitionResult describeTaskDefinition(DescribeTaskDefinitionRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeTaskDefinition(request);
      }
docs: <p>
  Describes a task definition. You can specify a <code>family</code> and <code>revision</code> to find information
  about a specific task definition, or you can simply specify the family to find the latest <code>ACTIVE</code>
  revision in that family.
  </p>
  <note>
  <p>
  You can only describe <code>INACTIVE</code> task definitions while an active task or service references them.
  </p>
  </note>
  
  @param describeTaskDefinitionRequest
  @return Result of the DescribeTaskDefinition operation returned by the service.
  @throws ServerException
  These errors are usually caused by a server issue.
  @throws ClientException
  These errors are usually caused by a client action, such as using an action or resource on behalf of a
  user that doesn't have permissions to use the action or resource, or specifying an identifier that is not
  valid.
  @throws InvalidParameterException
  The specified parameter is invalid. Review the available parameters for the API request.
  @sample AmazonECS.DescribeTaskDefinition
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ecs-2014-11-13/DescribeTaskDefinition" target="_top">AWS API
  Documentation</a>