text: import React, { Component } from 'react';
  
  class Urls extends Component {
      render() {
          const urls = this.props.urls.map((url) =>
              <li className="list-group-item">{url}</li>
          );
  
          return (
              <ul className="list-group">{urls}</ul>
          )
      }
  }
  
  export default Urls;
  