<description><![CDATA[Restricts the classes/resources from the current artifact's CoreExtension class realm that are exposed. Values ending with ".*" expose all classes/resources which are directly contained in the given package in binary form. 
            Other values define only the prefix of classes/resources being exposed. Their binary name must be equal to the prefix or starting with the prefix (followed by "." or "$").

          <name>downloadUrl</name>
          <version>4.0.0+</version>
          <description>
            The URL of the project's download page. If not given users will be
            referred to the homepage given by {@code url}.
            This is given to assist in locating artifacts that are not in the repository due to
            licensing restrictions.
          </description>
          <type>String</type>

   | server for that repository.
   |-->
  <mirrors>
    <!-- mirror
     | Specifies a repository mirror site to use instead of a given repository. The repository that
     | this mirror serves has an ID that matches the mirrorOf element of this mirror. IDs are used
     | for inheritance and direct lookup purposes, and must be unique across the set of mirrors.

      </fields>
    </class>
    <class>
      <name>Mirror</name>
      <version>1.0.0+</version>
      <superClass>IdentifiableBase</superClass>
      <description>
        A download mirror for a given repository.
      </description>
      <fields>
        <field>
          <name>mirrorOf</name>
          <required>true</required>
          <version>1.0.0+</version>
          <type>String</type>