#NEWLINE# def batch_get_entity( self , table_name , row_key , column_names ) : #NEWLINE# #INDENT# '\n    Takes in batches of keys and retrieves their cooresponding rows.\n    \n    Args:\n      table_name: The table to access\n      row_keys: A list of keys to access\n      column_names: A list of columns to access\n    Returns:\n      A dictionary of rows and columns/values of those rows. The format \n      looks like such: {key:{column_name:value,...}}\n    ' #NEWLINE# raise NotImplementedError ( ( 'get_entity is not implemented in %s.' % table_name . __class__ ) )