title: 'Composer require server --dev' not working (Symfony docs)
body: <p>I'm new to Symfony and I'm following a couple of quick introductions on the Symfony website: the <a href="https://symfony.com/doc/current/quick_tour/the_big_picture.html" rel="noreferrer">quick tour</a> and <a href="https://symfony.com/doc/current/setup.html" rel="noreferrer">installation guide</a>. Both say you can install a server using:</p>
  
  <p><code>composer require server --dev</code></p>
  
  <p>When I run this command I get:</p>
  
  <pre><code> [InvalidArgumentException]
    Could not find package server.
  
    Did you mean one of these?
        react/http
        react/socket
        cboden/ratchet
        voryx/thruway
        laravel/passport
  
  
  require [--dev] [--prefer-source] [--prefer-dist] [--no-progress] [--no-suggest] [--no-update] [--no-scripts] [--update-no-dev] [--update-with-dependencies] [--update-with-all-dependencies] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--] [&lt;packages&gt;]...
  </code></pre>
  
  <p>Okay, I can ignore this and use another local server, but I wondered if I was doing something wrong or if the documentation is out of date? Composer is installed fine on my machine (a Mac).</p>