*/ public static function cases(): array; } interface BackedEnum { public readonly int|string $value; public static function from(string|int $value): static; public static function tryFrom(string|int $value): ?static; } } namespace FTP { final class Connection {} } namespace IMAP { final class Connection {} } namespace LDAP { final class Connection {} final class Result {} final class ResultEntry {} } namespace PgSql { final class Connection {} final class Result {} final class Lob {} } namespace PSpell { final class Config {} final class Dictionary {} }