text: import React from 'react';
  import CodeBlock from '../components/CodeBlock';
  
  const mixinCode = `React.createClass({
    mixins: [ValidationMixin]
  
    ...`;
  
  export default class Slide extends React.Component {
    render() {
      return (
        <div>
          <h1>That sounds like a mixin!</h1>
  
          <CodeBlock>
            { mixinCode }
          </CodeBlock>
        </div>
      );
    }
  }
  