How to use the aws-xray-sdk-core.setLogger function in aws-xray-sdk-core

var AWSXRay = require("aws-xray-sdk-core");
var logger = require('winston');
AWSXRay.setLogger(logger);
var AWS = AWSXRay.captureAWS(require('aws-sdk'));

var docClient = new AWS.DynamoDB.DocumentClient({
  apiVersion: '2012-08-10'
});

// Table name is configured as env var.
var table = process.env.TABLE_NAME;

exports.handler = (event, context, callback) => {

  console.log('Received event:', JSON.stringify(event, null, 2));

  var responseBody = {
      message: ""
  };