n><span class="token punctuation">(</span><span class="token parameter">event</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    event<span class="token punctuation">.</span>view<span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">'isEditing'</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span><span cla