ta</span><span class="p">:</span> <span class="kt"><a href="../Protocols.html#/s:17MetaSerialization0A0P">Meta</a></span><span class="p">?</span> <span class="o">=</span> <span class="kc">nil</span><span class="p">,</span>
                               <span class="n">toType</span> <span class="nv">type</span><span class="p">:</span> <span class="kt">D</span><span class="o">.</span><span class="k">Type</span><span class="p">,</span>
                               <span class="k">for</span> <span class="nv"