How to use the node-opcua-client.BrowseDirection function in node-opcua-client

const nodeId2 = browseResult.references[0].nodeId;
        const dataValue2 = await session.read({
            nodeId: nodeId2,
            attributeId: 13
        });
        if (doDebug) {
            console.log("namespaceUri =", dataValue2.value.value.toString());
        }
        const namespaceUri = dataValue2.value.value.toString();

        // function enumerate_all_type_with_id(callback) {
        const browseDescription2 = {
            nodeId: nodeId2,
            referenceTypeId: "HasComponent",
            browseDirection: opcua.BrowseDirection.Forward,
            resultMask: 0x3F
        };
        const browseResult2 = await session.browse(browseDescription2);
        if (doDebug) {
            console.log("--", browseResult2.toString());
        }
        if (doDebug) {
            browseResult2.references = browseResult2.references || [];
            const aa = browseResult2.references.map( (x) => x.nodeId.toString() + " " + x.browseName).join("|  \n");
            console.log("r =", aa);
        }

        for (const x of browseResult2.references) {
            // process_structure(x, callback) {
            const nodeId = x.nodeId;
            const name = x.browseName.toString();

async function parse_opcua_common(session) {

    const binaries = "i=83";

    // browse_all_opc_binary_schema_and_xml_schema
    const browseDescriptions = [
        {
            nodeId: "i=93", //OPCBinarySchema_TypeSystem
            referenceTypeId: "HasComponent",
            browseDirection: opcua.BrowseDirection.Forward,
            resultMask: 0x3F
        },
        {
            nodeId: "i=92", //XMLSchema_TypeSystem
            referenceTypeId: "HasComponent",
            browseDirection: opcua.BrowseDirection.Forward,
            resultMask: 0x3F
        }

    ];

    const browseResults = await session.browse(browseDescriptions);

    const binSchemaReferences = browseResults[0].references;
    const xmlSchemaReferences = browseResults[1].references;

function expand_opcua_node(node, callback) {

    if (!g_session) {
        return callback(new Error("No Connection"));
    }

    const children = [];

    const b = [{
            nodeId: node.nodeId,
            referenceTypeId: "Organizes",
            includeSubtypes: true,
            browseDirection: opcua.BrowseDirection.Forward,
            resultMask: 0x3f

        },
        {
            nodeId: node.nodeId,
            referenceTypeId: "Aggregates",
            includeSubtypes: true,
            browseDirection: opcua.BrowseDirection.Forward,
            resultMask: 0x3f

        },
        {
            nodeId: node.nodeId,
            referenceTypeId: "HasSubtype",
            includeSubtypes: true,
            browseDirection: opcua.BrowseDirection.Forward,

resultMask: 0x3f

        },
        {
            nodeId: node.nodeId,
            referenceTypeId: "Aggregates",
            includeSubtypes: true,
            browseDirection: opcua.BrowseDirection.Forward,
            resultMask: 0x3f

        },
        {
            nodeId: node.nodeId,
            referenceTypeId: "HasSubtype",
            includeSubtypes: true,
            browseDirection: opcua.BrowseDirection.Forward,
            resultMask: 0x3f
        },

    ];

    g_session.browse(b, function (err, results) {

        if (!err) {

            let result = results[0];

            for (let i = 0; i < result.references.length; i++) {
                const ref = result.references[i];
                children.push(new TreeItem({
                    arrow: "◊-o-> ",
                    browseName: ref.browseName.toString(),