code: def get(cls, id_or_name, *, parent=None, namespace=None):
          
          return Key(cls, id_or_name, parent=parent, namespace=namespace).get()
docs: Get an entity by id.
  
          Parameters:
            id_or_name(int or str): The entity's id.
            parent(anom.Key, optional): The entity's parent Key.
            namespace(str, optional): The entity's namespace.
  
          Returns:
            Model: An entity or ``None`` if the entity doesn't exist in
            Datastore.