title: Can't find Source files for Laravel
body: <p>My Provider do not allow to install the Lavendel-Framework. So I do not have access to the Lavendel-Structure. But I would like to clone some functions. Especcialy the collect function.
  For this I download the complete libray from <a href="https://github.com/laravel/laravel" rel="nofollow noreferrer">https://github.com/laravel/laravel</a> and scan the files for collect. But there is no collect. What is the secret here. Where are the Source-files. Isn't it open source?</p>
  
  <pre><code>$collection = collect(['taylor', 'abigail', null])-&gt;map(function ($name) {
          return strtoupper($name);
      })
      -&gt;reject(function ($name) {
          return empty($name);
      });
  </code></pre>
  
  <p><a href="https://laravel.com/docs/5.4/collections" rel="nofollow noreferrer">https://laravel.com/docs/5.4/collections</a></p>