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              <p>The <code>Installer</code> class operates on a set of <code>InstallerFile</code> instances.
It can check to see if any files are stale and whether or not root
access is necessary for installation. It can also install any stale
files asynchronously.</p>

            </div>
            
            <div class="content"><div class='highlight'><pre><span class="hljs-built_in">module</span>.e