How to use the node-opcua-service-filter.EventFilter function in node-opcua-service-filter

const StatusCodes = require("node-opcua-status-code").StatusCodes;
const Enum = require("node-opcua-enum").Enum;
const assert = require("node-opcua-assert").assert;
const NodeClass = require("node-opcua-data-model").NodeClass;
const _ = require("underscore");

const AttributeIds = require("node-opcua-data-model").AttributeIds;

const SequenceNumberGenerator = require("node-opcua-secure-channel").SequenceNumberGenerator;

const EventEmitter = require("events").EventEmitter;
const util = require("util");

const SessionContext = require("node-opcua-address-space").SessionContext;

const EventFilter = require("node-opcua-service-filter").EventFilter;
const DataChangeFilter = require("node-opcua-service-subscription").DataChangeFilter;
const AggregateFilter = require("node-opcua-service-subscription").AggregateFilter;

const UAVariable = require("node-opcua-address-space").UAVariable;
const validateFilter = require("./validate_filter").validateFilter;
const isValidDataEncoding = require("node-opcua-data-model").isValidDataEncoding;


const debugLog = require("node-opcua-debug").make_debugLog(__filename);
const doDebug = require("node-opcua-debug").checkDebugFlag(__filename);


const SubscriptionState = new Enum([
    "CLOSED",   // The Subscription has not yet been created or has terminated.
    "CREATING", // The Subscription is being created
    "NORMAL",   // The Subscription is cyclically checking for Notifications from its MonitoredItems.

const Variant = require("node-opcua-variant").Variant;
const StatusCodes = require("node-opcua-status-code").StatusCodes;
const NodeClass = require("node-opcua-data-model").NodeClass;

const AttributeIds = require("node-opcua-data-model").AttributeIds;
const BaseNode = require("node-opcua-address-space").BaseNode;

const sameDataValue = require("node-opcua-data-value").sameDataValue;
const sameVariant = require("node-opcua-variant").sameVariant;
const isValidVariant = require("node-opcua-variant").isValidVariant;

const MonitoringMode = subscription_service.MonitoringMode;
const MonitoringParameters = subscription_service.MonitoringParameters;
const MonitoredItemModifyResult = subscription_service.MonitoredItemModifyResult;
const TimestampsToReturn = read_service.TimestampsToReturn;
const EventFilter = require("node-opcua-service-filter").EventFilter;
const apply_timestamps = require("node-opcua-data-value").apply_timestamps;

const UAVariable = require("node-opcua-address-space").UAVariable;

const defaultItemToMonitor = {indexRange: null, attributeId: read_service.AttributeIds.Value};

const SessionContext = require("node-opcua-address-space").SessionContext;
const NumericRange = require("node-opcua-numeric-range").NumericRange;



const debugLog = require("node-opcua-debug").make_debugLog(__filename);
const doDebug = require("node-opcua-debug").checkDebugFlag(__filename);

function _adjust_sampling_interval(samplingInterval,node_minimumSamplingInterval) {