old_contents: class UsageRecord(object):
      def __init__(self, data):
          self._data = data
  
      def __getitem__(self, key):
          return self._data[key]
  
      @property
      def type(self):
          return self._data[" UsageType"]
  
      @property
      def value(self):
          return int(self._data[" UsageValue"])
  
      @property
      def resource(self):
          return self._data[" Resource"]
  
      @property
      def area(self):
          if self.type.startswith("EUC1-"):
              return "EU (Frankfurt)"
  
      @property
      def is_data_transfer(self):
          return "DataTransfer" in self.type or "CloudFront" in self.type
  
new_contents: class UsageRecord(object):
      def __init__(self, data):
          self._data = data
  
      @property
      def type(self):
          return self._data[" UsageType"]
  
      @property
      def value(self):
          return int(self._data[" UsageValue"])
  
      @property
      def resource(self):
          return self._data[" Resource"]
  
      @property
      def area(self):
          if self.type.startswith("EUC1-"):
              return "EU (Frankfurt)"
  
      @property
      def is_data_transfer(self):
          return "DataTransfer" in self.type or "CloudFront" in self.type
  
subject: Remove __getitem__ from UsageRecord