code: func (db *SnapshotDB) GetWhitelistForIdentity(c context.Context, ident identity.Identity) (string, error) {
  	return db.assignments[ident], nil
  }
docs: // GetWhitelistForIdentity returns name of the IP whitelist to use to check
  // IP of requests from given `ident`.
  //
  // It's used to restrict access for certain account to certain IP subnets.
  //
  // Returns ("", nil) if `ident` is not IP restricted.