<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def encrypt(self, serialized):
 """ Encrypts the serialized message using Fernet :param serialized: the serialized object to encrypt :type serialized: bytes :returns: an encrypted bytes returned by Fernet """


        fernet = Fernet(self.encryption_cipher_key)
        return fernet.encrypt(serialized)