code: def _feature_most_common(self, results):
          
          try:
              country_count = Counter([i['country_code3'] for i in results['hits']['hits']])
              most_common = country_count.most_common()[0][0]
              return most_common
          except IndexError:
              return ""
          except TypeError:
              return ""
docs: Find the most common country name in ES/Geonames results
  
          Paramaters
          ----------
          results: dict
              output of `query_geonames`
  
          Returns
          -------
          most_common: str
              ISO code of most common country, or empty string if none