The different authentication states the VPA service can be in.
The user is not logged in. Authentication can be requested.
The authentication process has been started.
Authentication is in progress.
The user is logged in and can use the VPA.
There was an error when attempting to authenticate.
Authentication is not possible due to some general error, such as no internet connection.
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
Returns an array containing the constants of this enum type, in the order they're declared.