def isRevoked(self):
     expiry = time.mktime(self.create_date.timetuple()) + self.expires_in
     if datetime.frometimestamp(expiry) < datetime.utcnow():
         self.revoke()
     return self.revoked
 def isRevoked(self):
     expiry = time.mktime(self.create_date.timetuple()) + self.expires_in
     if datetime.frometimestamp(expiry) < datetime.utcnow():
         self.revoke()
     return self.revoked