                       <div class="language">
                          <p class="aside-title">Swift</p>
                          <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">class</span> <span class="kt">Mars</span> <span class="p">:</span> <span class="kt"><a href="Classes/Planet.html">Planet</a></span><span class="p">,</span> <span class="kt"><a href="Protocols/PlanetaryPhysicalDetails.html">PlanetaryPhysicalDetails</a></span><span class="p">,</span> <span class="kt