code: @Override
      public UpdateDirectoryConfigResult updateDirectoryConfig(UpdateDirectoryConfigRequest request) {
          request = beforeClientExecution(request);
          return executeUpdateDirectoryConfig(request);
      }
docs: <p>
  Updates the specified Directory Config object in AppStream 2.0. This object includes the information required to
  join streaming instances to an Active Directory domain.
  </p>
  
  @param updateDirectoryConfigRequest
  @return Result of the UpdateDirectoryConfig operation returned by the service.
  @throws ResourceInUseException
  The specified resource is in use.
  @throws ResourceNotFoundException
  The specified resource was not found.
  @throws ConcurrentModificationException
  An API error occurred. Wait a few minutes and try again.
  @sample AmazonAppStream.UpdateDirectoryConfig
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/appstream-2016-12-01/UpdateDirectoryConfig"
  target="_top">AWS API Documentation</a>