title: Javascript Arrow function expression to regular function expression
body: <p>How do you convert the following arrow function expression to a regular one?</p>
  <pre><code>rootRef.on('child_removed', snapshot =&gt; {
      console.log('Child(s) removed');
      B4A.CallSub('onchild_removed',true,&quot;Child Added&quot;);
  
  });
   
  </code></pre>