text: class CustomList extends React.Component {
      constructor(props) {
          super(props);
  
          this.buildList = this.buildList.bind(this);
      }
  
      buildList(item, index) {
          return (
              <li key={`li_${item + index}`}>{item}</li>
          );
      }
  
      render() {
          const customList = this.props.customList.map(this.buildList);
  
          return (
              <ul className={'customList'}>
                  {customList}
              </ul>
          );
      }
  }
  
  export default CustomList;