code: def _configure_port_binding(self, is_provider_vlan, duplicate_type,
                                  is_native,
                                  switch_ip, vlan_id,
                                  intf_type, nexus_port, vni):
          
  
          # This implies VLAN, VNI, and Port are all duplicate.
          # Then there is nothing to configure in Nexus.
          if duplicate_type == const.DUPLICATE_PORT:
              return
  
          auto_create, auto_trunk = self._gather_config_parms(
              is_provider_vlan, vlan_id)
  
          # if type DUPLICATE_VLAN, don't create vlan
          if duplicate_type == const.DUPLICATE_VLAN:
              auto_create = False
  
          if auto_create and auto_trunk:
              LOG.debug("Nexus: create vlan %s and add to interface", vlan_id)
              self.driver.create_and_trunk_vlan(
                  switch_ip, vlan_id, intf_type,
                  nexus_port, vni, is_native)
          elif auto_create:
              LOG.debug("Nexus: create vlan %s", vlan_id)
              self.driver.create_vlan(switch_ip, vlan_id, vni)
          elif auto_trunk:
              LOG.debug("Nexus: trunk vlan %s", vlan_id)
              self.driver.send_enable_vlan_on_trunk_int(
                  switch_ip, vlan_id,
                  intf_type, nexus_port, is_native)
docs: Conditionally calls vlan and port Nexus drivers.