code: def _getFieldStats(self):
      
  
      fieldStats = dict()
      fieldNames = self._inputSource.getFieldNames()
      for field in fieldNames:
        curStats = dict()
        curStats['min'] = self._inputSource.getFieldMin(field)
        curStats['max'] = self._inputSource.getFieldMax(field)
        fieldStats[field] = curStats
      return fieldStats
docs: Method which returns a dictionary of field statistics received from the
      input source.
  
      Returns:
  
        fieldStats: dict of dicts where the first level is the field name and
          the second level is the statistic. ie. fieldStats['pounds']['min']