docs: def get_host_health_power_supplies(self, data=None):
          """Request the health power supply information.
  
          :param: the data to retrieve from the server, defaults to None.
          :returns: the dictionary containing the power supply information.
          :raises: IloConnectionError if failed connecting to the iLO.
          :raises: IloError, on an error from iLO.
          """
          data = self.get_host_health_data(data)
          d = (data['GET_EMBEDDED_HEALTH_DATA']['POWER_SUPPLIES']['SUPPLY'])
          if not isinstance(d, list):
              d = [d]
          return d