title: Can I organize Doctrine entities or their mapping files into subfolders?
body: <p>I have tried this directory structure for my mapping files:</p>
  
  <pre><code>/config/doctrine/Place.orm.yml
  /config/doctrine/Place/Type.orm.yml
  /config/doctrine/Place/Price.orm.yml
  </code></pre>
  
  <p>And have pointed to the corresponding Entity in my mapping file like this:</p>
  
  <pre><code>Project\TestBundle\Entity\Place\Type:
    type: entity
    table: place_type
    id:
      id:
        type: integer
        generator: { strategy:AUTO }
    fields:
      name:
        type: string
        length: 255
  </code></pre>
  
  <p>But this returns an error. The system can't seem to detect the mapping file for Entity.</p>