How to use the hazelcast-client.EvictionPolicy function in hazelcast-client

* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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 * See the License for the specific language governing permissions and
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var Client = require('hazelcast-client').Client;
var Config = require('hazelcast-client').Config;
var EvictionPolicy = require('hazelcast-client').EvictionPolicy;

var nearCachedMapName = 'nearCachedMap';
var regularMapName = 'reqularMap';
var client;

var cfg = new Config.ClientConfig();
var nearCacheConfig = new Config.NearCacheConfig();
nearCacheConfig.name = nearCachedMapName;
nearCacheConfig.evictionPolicy = EvictionPolicy.LFU;
nearCacheConfig.invalidateOnChange = true;
cfg.nearCacheConfigs[nearCachedMapName] = nearCacheConfig;

function do50000Gets(client, mapName) {
    var timerStart;
    var timerEnd;
    var map;