docs: def serialize(self):
          """ Converts the post to something compatible with `json.dumps` """
          data = super(Note, self).serialize()
          data.update({
              "verb": "post",
              "object": {
                  "objectType": self.object_type,
                  "content": self.content,
              }
          })
          if self.display_name:
              data["object"]["displayName"] = self.display_name
  
          return data