docs: def _format_rule(self, protocol, cidr, min_port, max_port, direction):
          """Get EOS formatted rule"""
          if cidr is None:
              cidr = 'any'
  
          if direction == n_const.INGRESS_DIRECTION:
              dst_ip = 'any'
              src_ip = cidr
          elif direction == n_const.EGRESS_DIRECTION:
              dst_ip = cidr
              src_ip = 'any'
  
          if protocol == n_const.PROTO_NAME_ICMP:
              rule = "permit icmp %s %s" % (src_ip, dst_ip)
              if min_port:
                  rule += " %s" % (min_port)
                  if max_port:
                      rule += " %s" % (max_port)
          else:
              rule = "permit %s %s %s" % (protocol, src_ip, dst_ip)
              if min_port and max_port:
                  rule += " range %s %s" % (min_port, max_port)
              elif min_port and not max_port:
                  rule += " eq %s" % min_port
          return rule