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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def AddBatchJob(client):
 """Add a new BatchJob to upload operations to. Args: client: an instantiated AdWordsClient used to retrieve the BatchJob. Returns: The new BatchJob created by the request. """

  # Initialize appropriate service.
  batch_job_service = client.GetService('BatchJobService', version='v201809')
  # Create a BatchJob.
  batch_job_operations = [{
      'operand': {},
      'operator': 'ADD'
  }]
  return batch_job_service.mutate(batch_job_operations)['value'][0]