title: How to access the class name of a React object in this.props.children
body: <p>In a react component render method that has some children components in this.props.children. How can I get the component (class) name of each child to differentiate between them?</p>
  
  <pre><code>React.Children.map(this.props.children, function(child){
      // how can I get the class name of a child or some other identifier
  })
  </code></pre>