Repository target, Repository source, boolean sourceDominant, Map<Object, Object> context) {
        RepositoryPolicy src = source.getReleases();
        if (src != null) {
            RepositoryPolicy tgt = target.getReleases();
            if (tgt == null) {
                tgt = new RepositoryPolicy();
                target.setReleases(tgt);
            }

          <association>
            <type>RepositoryPolicy</type>
          </association>
        </field>
        <field>
          <name>snapshots</name>
          <version>4.0.0+</version>
          <description>How to handle downloading of snapshots from this repository.</description>
          <association>
            <type>RepositoryPolicy</type>
          </association>
        </field>