docs: def add_bookmark(self, url, favorite=False, archive=False, allow_duplicates=True):
          """
          Adds given bookmark to the authenticated user.
  
          :param url: URL of the article to bookmark
          :param favorite: whether or not the bookmark should be favorited
          :param archive: whether or not the bookmark should be archived
          :param allow_duplicates: whether or not to allow duplicate bookmarks to
              be created for a given url
          """
          rdb_url = self._generate_url('bookmarks')
          params = {
              "url": url,
              "favorite": int(favorite),
              "archive": int(archive),
              "allow_duplicates": int(allow_duplicates)
          }
          return self.post(rdb_url, params)