code: def update(self, friendly_name=None, description=None, query=None):
      
      self._table._load_info()
      if query is not None:
        if isinstance(query, _query.Query):
          query = query.sql
        self._table._info['view'] = {'query': query}
      self._table.update(friendly_name=friendly_name, description=description)
docs: Selectively updates View information.
  
      Any parameters that are None (the default) are not applied in the update.
  
      Args:
        friendly_name: if not None, the new friendly name.
        description: if not None, the new description.
        query: if not None, a new query string for the View.