ort.multi_pass.how_to_write_policies_for_use_with_multi_pass"></a></span><a class="link" href="multi_pass.html#spirit.support.multi_pass.how_to_write_policies_for_use_with_multi_pass">How
        to write policies for use with multi_pass</a>
      </h5>
<p>
        All policies to be used with the <code class="computeroutput"><span class="identifier">default_policy</span></code>
        template need to have two embedded classes: <code class="computeroutput"><span class="identifier">unique</span></code>
   