tion id='declaration' class='declaration'>
  <h2>Declaration</h2>
  <div class='declaration-group'>
    <pre class='source indented'><code><span class='token-keyword'>func</span> <span class='token-identifier'>replaceNil</span>&lt;<span class='token-genericParameter'>T</span>&gt;(<span class='token-externalParam'>with</span> <span class='token-internalParam'>output</span>: T) -&gt; Publishers.Map&lt;Self, T&gt; <span class='token-keyword'>where</span> Self.Output == T?</code></pre>
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