Adds (assigns) multiple permissions to those associated directly with the account. If the account doesn't yet
have any string-based permissions, a new permissions collection (a Set<string>) will be created automatically.
@param permissions the permissions to add to those associated directly with the account.
Adds (assigns) multiple permissions to those associated directly with the account. If the account doesn't yet have any string-based permissions, a new permissions collection (a Set<string>) will be created automatically. @param permissions the permissions to add to those associated directly with the account.