<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def Heartbeat(self):
 """Sends a heartbeat to the Fleetspeak client. If this daemonservice is configured to use heartbeats, clients that don't call this method often enough are considered faulty and are restarted by Fleetspeak. """

    heartbeat_msg = common_pb2.Message(
        message_type="Heartbeat",
        destination=common_pb2.Address(service_name="system"))
    self._SendImpl(heartbeat_msg)