How to use the node-opcua-service-browse.BrowseDirection.Inverse function in node-opcua-service-browse

const nodesToBrowse2 = references.map((ref: ReferenceDescription) => {
        return {
            browseDirection: BrowseDirection.Inverse,
            includeSubtypes: false,
            nodeClassMask: makeNodeClassMask("Object | Variable"),
            nodeId: ref.nodeId,
            referenceTypeId: resolveNodeId("HasDescription"),
            resultMask: makeResultMask("NodeId | ReferenceType | BrowseName | NodeClass | TypeDefinition")
        };
    });
    const results2 = await session.browse(nodesToBrowse2);