code: def set_prbs(self, rx_ports=None, tx_ports=None):
          
  
          if not rx_ports:
              rx_ports = self.ports.values()
  
          if not tx_ports:
              tx_ports = {}
              for port in self.ports.values():
                  tx_ports[port] = port.streams.values()
  
          for port in rx_ports:
              port.set_receive_modes(IxeReceiveMode.widePacketGroup, IxeReceiveMode.sequenceChecking,
                                     IxeReceiveMode.prbs)
              port.enableAutoDetectInstrumentation = True
              port.autoDetectInstrumentation.ix_set_default()
              port.write()
  
          for port, streams in tx_ports.items():
              for stream in streams:
                  stream.autoDetectInstrumentation.enableTxAutomaticInstrumentation = True
                  stream.autoDetectInstrumentation.enablePRBS = True
              port.write()
docs: Set TX ports and RX streams for stream statistics.
  
          :param ports: list of ports to set RX PRBS. If empty set for all ports.
          :type ports: list[ixexplorer.ixe_port.IxePort]
          :param tx_ports: list of streams to set TX PRBS. If empty set for all streams.
          :type tx_ports:  dict[ixexplorer.ixe_port.IxePort, list[ixexplorer.ixe_stream.IxeStream]]