title: Naming: dual plural
body: <p>I encounter this problem with naming several times, and I can't find a definite answer. So, which of underneath naming is correct in English? Assuming that it is name for list of paths to directories.</p>
  
  <ul>
  <li><code>parentDirectoryPaths</code></li>
  <li><code>parentDirectoriesPath</code></li>
  <li><code>parentDirectoriesPaths</code></li>
  </ul>