old_contents: from abc import ABCMeta
  from interage.api import models
  from interage.api.config import APISettings
  
  class APIManager(metaclass = ABCMeta):
      def __init__(self, **args):
          super(APIManager, self).__init__()
          self.client = args.get('client')
  
      def get(self, id, as_json = False):
          result = self.client.request(self.uri + str(id))
          if(as_json):
              return result
  
          return self.model_class.create_instance_from_json(result)
  
      def all(self):
          result = self.client.request(self.uri)
          return self.__get_result_object(result)
  
      def filter(self, **params):
          response = self.client.request(self.uri, params = params)
          return self.__get_result_object(result)
  
      def __get_result_object(self, result):
          return models.APIResult(
              response = result,
              client = self.client,
              model_class = self.model_class,
          )
  
new_contents: from abc import ABCMeta
  from interage.api import models
  from interage.api.config import APISettings
  
  class APIManager(metaclass = ABCMeta):
      def __init__(self, **args):
          super(APIManager, self).__init__()
          self.client = args.get('client')
  
      def get(self, id, as_json = False):
          result = self.client.request(self.uri + str(id))
          if(as_json):
              return result
  
          return self.model_class.create_instance_from_json(result)
  
      def all(self):
          result = self.client.request(self.uri)
          return self.__get_result_object(result)
  
      def filter(self, **params):
          result = self.client.request(self.uri, params = params)
          return self.__get_result_object(result)
  
      def __get_result_object(self, result):
          return models.APIResult(
              response = result,
              client = self.client,
              model_class = self.model_class,
          )
  
subject: Fix filter method