an> <span class="kd">func</span> <span class="nf">matisseCreationError</span><span class="p">(</span><span class="n">_</span> <span class="nv">message</span><span class="p">:</span> <span class="kt">String</span><span class="p">?</span> <span class="o">=</span> <span class="kc">nil</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">NSError</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Paramet