YouTube Helper API.
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/549881/1698944/YouTube%20Helper%20API.js
@grant should be used if the consumer script wishes to use the Greasemonkey compatible parts of the storage API.
Both the GM.* and GM_* versions are supported for the following functions:
getValuesetValuedeleteValuelistValuesNote: If no relevant @grant is used, the script will automatically fall back to using standard localStorage instead.