<?php
  
  namespace Illuminate\Support\Traits;
  
  trait Tappable
  {
      /**
       * Call the given Closure with this instance then return the instance.
       *
       * @param  callable|null  $callback
       * @return mixed
       */
      public function tap($callback = null)
      {
          return tap($this, $callback);
      }
  }