practical way to set up Google Analytics Verification in nextJs

_document.js

import App, { Container } from 'next/app'
import Router from 'next/router'
import React from 'react'
import withGA from 'next-ga'
import keys from '../config/keys'
class MyApp extends App {
	static async getInitialProps({ Component, router, ctx }) {
		let pageProps = {}
		if (Component.getInitialProps) {
			pageProps = await Component.getInitialProps(ctx)
		}
		return { pageProps }
	}
	render() {
		const { Component, pageProps } = this.props
		return (
			<Container>
				<Component {...pageProps} />
			</Container>
		)
	}
}
export default withGA(keys.gaTrackID, Router)(MyApp)

jumped from here