pan> <span class="o">=</span> <span class="kc">nil</span><span class="p">,</span>
                        <span class="nv">serialNumber</span><span class="p">:</span> <span class="kt">UInt32</span><span class="p">?</span> <span class="o">=</span> <span class="kc">nil</span><span class="p">,</span>
                        <span class="nv">timeCreated</span><span class="p">:</span> <span class="kt"><a href="../Structs/FitTime.html">FitTime</a></span><span class="p">?</span> <span class="o">=</span> <span clas