docs: def get_active_ports(self):
          """
          :return: dictionary {index: object} of all ports.
          """
  
          if not self.resource_groups:
              return self.ports
          else:
              active_ports = OrderedDict()
              for resource_group in self.resource_groups.values():
                  for active_port in resource_group.active_ports:
                      active_ports[active_port] = self.ports[active_port]
              return active_ports