- Return an array of structs containing details about keys. If
- key_id_list is specified, only the specified keys will be queried.
+ Returns an array of structs containing details about keys. If
+ key_filter is specified and is an array of key identifiers, or a
+ struct of key attributes, only keys matching the filter will be
+ returned. If return_fields is specified, only the specified
+ details will be returned.