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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 ListHunts(context=None):
 """List all GRR hunts."""


  items = context.SendIteratorRequest("ListHunts", hunt_pb2.ApiListHuntsArgs())
  return utils.MapItemsIterator(lambda data: Hunt(data=data, context=context),
                                items)