old_contents: """Provide the SavableMixin class."""
  from ....const import API_PATH
  
  
  class SavableMixin(object):
      """Interface for RedditBase classes that can be saved."""
  
      def save(self, category=None):
          """Save the object.
  
          :param category: The category to save to (Default: None).
  
          """
          self._reddit.post(API_PATH['save'], data={'category': category,
                                                    'id': self.fullname})
  
      def unsave(self):
          """Unsave the object."""
          self._reddit.post(API_PATH['unsave'], data={'id': self.fullname})
  
new_contents: """Provide the SavableMixin class."""
  from ....const import API_PATH
  
  
  class SavableMixin(object):
      """Interface for RedditBase classes that can be saved."""
  
      def save(self, category=None):
          """Save the object.
  
          :param category: (Gold) The category to save to (Default:
              None). If your user does not have gold this value is ignored by
              Reddit.
  
          """
          self._reddit.post(API_PATH['save'], data={'category': category,
                                                    'id': self.fullname})
  
      def unsave(self):
          """Unsave the object."""
          self._reddit.post(API_PATH['unsave'], data={'id': self.fullname})
  
subject: Clarify that category is a gold feature for saving an item