and MAY be relative, to indicate that the host location is relative
                to the location where the OpenAPI document is being served. Variable
                substitutions will be made when a variable is named in `{`brackets`}`.
                * `description`: An optional string describing the host designated by
                the URL. [CommonMark syntax](https://commonmark.org/) MAY be used for

        </field>
        <field xdoc.separator="blank">
          <name>properties</name>
          <version>4.0.0+</version>
          <description>
            Properties that can be used throughout the POM as a substitution, and
            are used as filters in resources if enabled.
            The format is {@code &lt;name>value&lt;/name>}.
          </description>
          <type>Properties</type>

</pre>

<p>
Within a parenthesized <code>const</code> declaration list the
expression list may be omitted from any but the first ConstSpec.
Such an empty list is equivalent to the textual substitution of the
first preceding non-empty expression list and its type if any.
Omitting the list of expressions is therefore equivalent to
repeating the previous list.  The number of identifiers must be equal