eristicIdentifier</span><span class="p">:</span> <span class="kt"><a href="../Structs/CharacteristicIdentifier.html">CharacteristicIdentifier</a></span><span class="p">,</span> <span class="nv">completion</span><span class="p">:</span> <span class="kd">@escaping</span> <span class="p">(</span><span class="kt"><a href="../Enums/ReadResult.html">ReadResult</a></span><span class="o">&lt;</span><span class="kt">R</span><span class="o">&gt;</span><span class="p">)</span> <span class="o">-&gt;</span> <span class=