Enables encryption in the room.

        NOTE: Once enabled, encryption cannot be disabled.

        Returns:
        True if successful, False if not

def enable_encryption(self):
        """Enables encryption in the room.

        NOTE: Once enabled, encryption cannot be disabled.

        Returns:
        True if successful, False if not
        """
        try:
            self.send_state_event("m.room.encryption",
                                  {"algorithm": "m.megolm.v1.aes-sha2"})
            self.encrypted = True
            return True
        except MatrixRequestError:
            return False