old_contents: from messagebird.base import Base
  from messagebird.base_list import BaseList
  from messagebird.recipient import Recipient
  
  class VoiceMessagesList(BaseList):
      def __init__(self):
          super(VoiceMessagesList, self).__init__(VoiceMessage)
          self.perPage = None
          self.currentPage = None
          self.pageCount = None
          self._pagination = None
  
      @property
      def data(self):
          return self.items
  
      @property
      def pagination(self):
          return {
              "totalCount": self.totalCount,
              "pageCount": self.pageCount,
              "currentPage": self.currentPage,
              "perPage": self.perPage
          }
  
      @pagination.setter
      def pagination(self, value):
          if isinstance(value, dict):
              self.totalCount = value['totalCount']
              self.pageCount = value['pageCount']
              self.currentPage = value['currentPage']
              self.perPage = value['perPage']
              self.limit = self.perPage * self.currentPage
              self.offset = self.perPage * (self.currentPage - 1)
  
      @data.setter
      def data(self, value):
          if isinstance(value, list):
              self.count = len(value)
              self.items = value
  
  
  class VoiceMessage(Base):
      def __init__(self):
          self.id = None
          self.href = None
          self.originator = None
          self.body = None
          self.reference = None
          self.language = None
          self.voice = None
          self.repeat = None
          self.ifMachine = None
          self._scheduledDatetime = None
          self._createdDatetime = None
          self._recipients = None
  
      @property
      def scheduledDatetime(self):
          return self._scheduledDatetime
  
      @scheduledDatetime.setter
      def scheduledDatetime(self, value):
          self._scheduledDatetime = self.value_to_time(value)
  
      @property
      def createdDatetime(self):
          return self._createdDatetime
  
      @createdDatetime.setter
      def createdDatetime(self, value):
          self._createdDatetime = self.value_to_time(value)
  
      @property
      def recipients(self):
          return self._recipients
  
      @recipients.setter
      def recipients(self, value):
          value['items'] = [Recipient().load(r) for r in value['items']]
          self._recipients = value
  
new_contents: from messagebird.base import Base
  from messagebird.base_list import BaseList
  from messagebird.recipient import Recipient
  
  
  class VoiceMessagesList(BaseList):
      def __init__(self):
          super(VoiceMessagesList, self).__init__(VoiceMessage)
          self.perPage = None
          self.currentPage = None
          self.pageCount = None
          self._pagination = None
  
      @property
      def data(self):
          return self.items
  
      @property
      def pagination(self):
          return {
              "totalCount": self.totalCount,
              "pageCount": self.pageCount,
              "currentPage": self.currentPage,
              "perPage": self.perPage
          }
  
      @pagination.setter
      def pagination(self, value):
          if isinstance(value, dict):
              self.totalCount = value['totalCount']
              self.pageCount = value['pageCount']
              self.currentPage = value['currentPage']
              self.perPage = value['perPage']
              self.limit = self.perPage * self.currentPage
              self.offset = self.perPage * (self.currentPage - 1)
  
      @data.setter
      def data(self, value):
          if isinstance(value, list):
              self.count = len(value)
              self.items = value
  
  
  class VoiceMessage(Base):
      def __init__(self):
          self.id = None
          self.href = None
          self.originator = None
          self.body = None
          self.reference = None
          self.language = None
          self.voice = None
          self.repeat = None
          self.ifMachine = None
          self._scheduledDatetime = None
          self._createdDatetime = None
          self._recipients = None
  
      @property
      def scheduledDatetime(self):
          return self._scheduledDatetime
  
      @scheduledDatetime.setter
      def scheduledDatetime(self, value):
          self._scheduledDatetime = self.value_to_time(value)
  
      @property
      def createdDatetime(self):
          return self._createdDatetime
  
      @createdDatetime.setter
      def createdDatetime(self, value):
          self._createdDatetime = self.value_to_time(value)
  
      @property
      def recipients(self):
          return self._recipients
  
      @recipients.setter
      def recipients(self, value):
          value['items'] = [Recipient().load(r) for r in value['items']]
          self._recipients = value
  
subject: add an extra blank line