    <span class="bold"><strong>OwnershipPolicy</strong></span> classes
                </p>
              </td>
<td class="auto-generated"> </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">ref_counted</span></code>
                </p>
              </td>
<td>
                <p>
                  This class uses a reference counting scheme. The <code class="computeroutput"><span class="identifier">multi_pass</span></code> will delete it's sh