toString method
Redacts accessJwt and refreshJwt so credentials are not leaked
through logs, print, or crash reporters that stringify a Session.
Implementation
@override
String toString() =>
'Session(did: $did, handle: $handle, email: $email, '
'emailConfirmed: $emailConfirmed, emailAuthFactor: $emailAuthFactor, '
'accessJwt: [REDACTED], refreshJwt: [REDACTED], didDoc: $didDoc, '
'active: $active, status: $status)';