 order to be able
    to connect to a server SHOULD reach the client as described in the
    &#39;bearer token issuance&#39; sections below. It consists of:

       * &lt;storage_root&gt;, consisting of &#39;https://&#39; followed by a server
         host, and optionally a server port and a path prefix as per
         [<a href="#ref-IRI">IRI</a>]. Examples:
         * &#39;https://example.com&#39; (host only)
         * &#39;https://example.com:8080&#39; (host and port)
         * &#39;https://example.com/