Checks a registered sector_identifier_uri (section 8.1): fetches it and
requires every redirect URI of the registration to be in the JSON array it
serves.
Parameters
metadata: any
the registration metadata
Returns Promise<any>
a promise of null, or { errorCode, error, description }; it
never rejects
Checks a registered
sector_identifier_uri(section 8.1): fetches it and requires every redirect URI of the registration to be in the JSON array it serves.