en punctuation">.</span>Dao<span class="token punctuation">)</span> <span class="token builtin">error</span> <span class="token punctuation">{</span>
    article<span class="token punctuation">,</span> err <span class="token operator">:=</span> <span class="token function">FindArticleBySlug</span><span class="token punctuation">(</span>txDao<span class="token punctuation">,</span> <span class="token string">"lorem-ipsum"</span><span class="token punctuation">)</span>
    <span class="token keyword">if</span