spring - What is the resource_ids field for? -

the spring-security-oauth schema has table:

    create table oauth_client_details (       client_id varchar(256) primary key,       resource_ids varchar(256),       client_secret varchar(256),       scope varchar(256),       authorized_grant_types varchar(256),       web_server_redirect_uri varchar(256),       authorities varchar(256),       access_token_validity integer,       refresh_token_validity integer,       additional_information varchar(4096),       autoapprove varchar(256)     ); 

what resource_ids column for? there related question here it's not clear answers whether resource_ids perform same function scopes?