ass="pre">KeyError</span></code> will be thrown.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>If using the <code class="xref py py-class docutils literal notranslate"><span class="pre">Cosine</span></code> <a class="reference internal" href="#voyager.Space" title="voyager.Space"><code class="xref py py-class docutils literal notranslate"><span class="pre">Space</span></code></a>, this method
will return normalized versions of the vector that were
originally added to this i