docs: def __build_export(self, stats):
          """Build the export lists."""
          export_names = []
          export_values = []
  
          if isinstance(stats, dict):
              # Stats is a dict
              # Is there a key ?
              if 'key' in iterkeys(stats) and stats['key'] in iterkeys(stats):
                  pre_key = '{}.'.format(stats[stats['key']])
              else:
                  pre_key = ''
              # Walk through the dict
              for key, value in iteritems(stats):
                  if isinstance(value, bool):
                      value = json.dumps(value)
                  if isinstance(value, list):
                      try:
                          value = value[0]
                      except IndexError:
                          value = ''
                  if isinstance(value, dict):
                      item_names, item_values = self.__build_export(value)
                      item_names = [pre_key + key.lower() + str(i) for i in item_names]
                      export_names += item_names
                      export_values += item_values
                  else:
                      export_names.append(pre_key + key.lower())
                      export_values.append(value)
          elif isinstance(stats, list):
              # Stats is a list (of dict)
              # Recursive loop through the list
              for item in stats:
                  item_names, item_values = self.__build_export(item)
                  export_names += item_names
                  export_values += item_values
          return export_names, export_values