@property<EOL><INDENT>def authorized(self):<DEDENT>
return bool(self.access_token)<EOL>
Boolean that indicates whether this session has an OAuth token
        or not. If `self.authorized` is True, you can reasonably expect
        OAuth-protected requests to the resource to succeed. If
        `self.authorized` is False, you need the user to go through the OAuth
        authentication dance before OAuth-protected requests to the resource
        will succeed.