Gets the unique session identifier for this VPS session.
The session identifier can be used to distinguish between different VPS sessions,
useful for debugging. The ID only exists after at least one anchor has been created via
createAnchor(at:) or trackAnchor(payload:).
- Returns: The session identifier if available, nil if otherwise.
Gets the unique session identifier for this VPS session.
The session identifier can be used to distinguish between different VPS sessions,
useful for debugging. The ID only exists after at least one anchor has been created via
createAnchor(at:)ortrackAnchor(payload:).- Returns: The session identifier if available,
nilif otherwise.