code: @Override
      public UnshareDirectoryResult unshareDirectory(UnshareDirectoryRequest request) {
          request = beforeClientExecution(request);
          return executeUnshareDirectory(request);
      }
docs: <p>
  Stops the directory sharing between the directory owner and consumer accounts.
  </p>
  
  @param unshareDirectoryRequest
  @return Result of the UnshareDirectory operation returned by the service.
  @throws EntityDoesNotExistException
  The specified entity could not be found.
  @throws InvalidTargetException
  The specified shared target is not valid.
  @throws DirectoryNotSharedException
  The specified directory has not been shared with this AWS account.
  @throws ClientException
  A client exception has occurred.
  @throws ServiceException
  An exception has occurred in AWS Directory Service.
  @sample AWSDirectoryService.UnshareDirectory
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ds-2015-04-16/UnshareDirectory" target="_top">AWS API
  Documentation</a>