code: def summarization(self, summarization):
          
          allowed_values = ["MEAN", "MEDIAN", "MIN", "MAX", "SUM", "COUNT", "LAST", "FIRST"]  # noqa: E501
          if summarization not in allowed_values:
              raise ValueError(
                  "Invalid value for `summarization` ({0}), must be one of {1}"  # noqa: E501
                  .format(summarization, allowed_values)
              )
  
          self._summarization = summarization
docs: Sets the summarization of this Chart.
  
          Summarization strategy for the chart.  MEAN is default  # noqa: E501
  
          :param summarization: The summarization of this Chart.  # noqa: E501
          :type: str