       <p>The shape&rsquo;s size</p>

                      </div>
                      <h4>Default Implementation</h4>
                      <div class="default_impl abstract">
                        <p>Default size</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Swift</p>
                          <pre class="highlight"><code><spa