docs: def send(self, p):
          """Send an ISOTP frame and block until the message is sent or an error
          happens."""
          with self.send_mutex:
              self.begin_send(p)
  
              # Wait until the tx callback is called
              self.tx_done.wait()
              if self.tx_exception is not None:
                  raise Scapy_Exception(self.tx_exception)
              return