text: function nextInLine(arr, item) {
      // Only change code below this line
      arr.push(item);
      item = arr.shift();
      return item;
      // Only change code above this line
  }
    
  // Setup
  var testArr = [1,2,3,4,5];
  
  // Display code
  console.log("Before: " + JSON.stringify(testArr));
  console.log(nextInLine(testArr, 6));
  console.log("After: " + JSON.stringify(testArr));
  