<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def process_task(self):
 """Called when the registration request should be sent to the BBMD."""

        pdu = RegisterForeignDevice(self.bbmdTimeToLive)
        pdu.pduDestination = self.bbmdAddress

        # send it downstream
        self.request(pdu)