Search, Admin and ClusterManager API missing/incomplete in API docs

Problem
The following API docs seems missing or incomplete

• Admin
• Search and bucket-search
• The docs says there is a cluster_manager() method, I can't find it in the API docs.

  # Create a user and assign roles

  manager = cluster.cluster_manager()

  manager.user_upsert('cbtestuser', 'cbtestuserpwd', [

  # Roles required for the reading of data from the bucket

  ('data_reader', 'travel-sample'),

  ('query_select', 'travel-sample')])