URL:

        URI_ENCODE( &lt;storage_root&gt; &#39;/&#39; )

    Subsequently, if &lt;parent_folder&gt; is the URL of a folder, then the
    URL of an item contained in it is:

        URI_ENCODE( &lt;parent_folder&gt; &lt;document_name&gt; )

    for a document, or:

        URI_ENCODE( &lt;parent_folder&gt; &lt;folder_name&gt; &#39;/&#39; )

    for a folder. Item names MAY contain all characters except &#39;/&#39; and
    the null character, and MUST NOT have zero length.

    A document description is 