Device component - gNMI OpenConfig Driver:

        sif_index = get_int(resource_value, 'index', None)  # 0

        if delete:

            address_ip = get_str(resource_value, 'address_ip', None)

            if address_ip is not None:

            if sif_index is None:

                return None, None

                PATH_TMPL = (

                    '/interfaces/interface[name={:s}]/subinterfaces/subinterface[index={:d}]'

                    '/openconfig-if-ip:ipv4/addresses/address[ip={:s}]'

            root_node : libyang.DContainer = yang_handler.get_data_path(

                '/openconfig-interfaces:interfaces'

            )

                str_path = PATH_TMPL.format(if_name, sif_index, address_ip)

                return str_path, json.dumps({})

            if sif_index is None:

                return None, None

            address_ip = get_str(resource_value, 'address_ip', None)

            if address_ip is None:

                PATH_TMPL = '/interfaces/interface[name={:s}]/subinterfaces/subinterface[index={:d}]'

                str_path = PATH_TMPL.format(if_name, sif_index)

            str_data = json.dumps({})

            root_node : libyang.DContainer = yang_handler.get_data_path(

                '/openconfig-interfaces:interfaces'

                yang_sif = root_node.find_path('/'.join([

                    '', # add slash at the beginning

                    'openconfig-interfaces:interfaces',

                    'interface[name="{:s}"]'.format(if_name),

                    'subinterfaces',

                    'subinterface[index="{:d}"]'.format(sif_index),

                ]))

            else:

                PATH_TMPL = (

                    '/interfaces/interface[name={:s}]/subinterfaces/subinterface[index={:d}]'

                    '/openconfig-if-ip:ipv4/addresses/address[ip={:s}]'

                )

                str_path = PATH_TMPL.format(if_name, sif_index, address_ip)

                yang_sif = root_node.find_path('/'.join([

                    '', # add slash at the beginning

                    'openconfig-interfaces:interfaces',

                    'interface[name="{:s}"]'.format(if_name),

                    'subinterfaces',

                    'subinterface[index="{:d}"]'.format(sif_index),

                    'openconfig-if-ip:ipv4',

                    'addresses',

                    'address[ip="{:s}"]'.format(address_ip)

                ]))

            if yang_sif is not None:

                yang_sif.unlink()

                yang_sif.free()

            str_data = json.dumps({})

            return str_path, str_data

        enabled        = get_bool(resource_value, 'enabled',  None) # True/False