an class="link-text">
              Reopening Classes and Instances
            </span>
          </a>
        </li>
              <li class="toc-item toc-link ">
          <a id="ember140590" class="ember-view" data-test-toc-link="Computed Properties" href="/v2.14.0/object-model/computed-properties">
            <span class="link-text">
              Computed Properties
            </span>
          </a>
        </li>
              <li class="toc-item toc-link ">
          <a id="ember140591" class="ember-