text: import React, { Component } from 'react';
  import logo from './logo.svg';
  import './App.css';
  
  class App extends Component {
    render() {
      return (
        <div className="App">
          <header className="App-header">
            <img src={logo} className="App-logo" alt="logo" />
            <p>
              <code>Hi! You have been authenticated from the Azure Active Directory.</code>
            </p>
            <button className="sign-out" onClick={() => window.authContext.logOut()}>Sign out</button>
          </header>
        </div>
      );
    }
  }
  
  export default App;
  