code: def all(cls, client, **kwargs):
          
          max_date = kwargs['max_date'] if 'max_date' in kwargs else None
          max_fetches = \
              kwargs['max_fetches'] if 'max_fetches' in kwargs else None
  
          url = 'https://api.robinhood.com/options/positions/'
          params = {}
          data = client.get(url, params=params)
          results = data["results"]
  
          if is_max_date_gt(max_date, results[-1]['updated_at'][0:10]):
              return results
          if max_fetches == 1:
              return results
  
          fetches = 1
          while data["next"]:
              fetches = fetches + 1
              data = client.get(data["next"])
              results.extend(data["results"])
              if is_max_date_gt(max_date, results[-1]['updated_at'][0:10]):
                  return results
              if max_fetches and (fetches >= max_fetches):
                  return results
          return results
docs: fetch all option positions