code: def get_available_columns(self, dataset_ids):
          
          if not isinstance(dataset_ids, list):
              dataset_ids = [dataset_ids]
  
          data = {
              "dataset_ids":
                  dataset_ids
          }
  
          failure_message = "Failed to get available columns in dataset(s) {}".format(dataset_ids)
  
          return self._get_success_json(self._post_json(
              'v1/datasets/get-available-columns', data, failure_message=failure_message))['data']
docs: Retrieves the set of columns from the combination of dataset ids given
  
          :param dataset_ids: The id of the dataset to retrieve columns from
          :type dataset_ids: list of int
          :return: A list of column names from the dataset ids given.
          :rtype: list of str