text: class Columns(object):
      def __init__(self, name=None, type_=None, isAverage=None, isMax=None, isMin=None, isCount=None, value_=None, condition=None, isSum=None):
          self.name = name
          self.type_ = type_
          self.isAverage = isAverage
          self.isMax = isMax
          self.isMin = isMin
          self.isCount = isCount
          self.value_ = value_
          self.condition = condition
          self.isSum = isSum