ection class="desc markdown">
          <p>Returns the host part of the authority component.</p>
<p>Returns the empty string if there is no authority component and
hence no host.</p>
<p>If the host is an IP version 6 address, the surrounding <code>[</code> and <code>]</code> is
removed.</p>
<p>The host string is case-insensitive.
The returned host name is canonicalized to lower-case
with upper-case percent-escapes.</p>
        </section>
                <section class="summary source-code" id="source">
    