docs: def get_ip_address(self, x, y):
          """Get the IP address of a particular SpiNNaker chip's Ethernet link.
  
          Returns
          -------
          str or None
              The IPv4 address (as a string) of the chip's Ethernet link or None
              if the chip does not have an Ethernet connection or the link is
              currently down.
          """
          chip_info = self.get_chip_info(x=x, y=y)
          return chip_info.ip_address if chip_info.ethernet_up else None