</association>
        </field>
        <field>
          <name>properties</name>
          <description>
            Extended configuration specific to this profile goes here.
            Contents take the form of {@code &lt;property.name&gt;property.value&lt;/property.name&gt;}
          </description>
          <type>Properties</type>
          <association xml.mapStyle="inline">
            <type>String</type>

            if (!visited.add(a.getGroupId() + ':' + a.getArtifactId() + ':' + a.getBaseVersion())) {
                RepositoryException exception =
                        new RepositoryException("Artifact relocations form a cycle: " + visited);
                invalidDescriptor(session, trace, a, exception);
                if ((getPolicy(session, a, request) & ArtifactDescriptorPolicy.IGNORE_INVALID) != 0) {
                    return null;

   |
   | NOTE: For profiles defined in the settings.xml, you are restricted to specifying only artifact
   |       repositories, plugin repositories, and free-form properties to be used as configuration
   |       variables for plugins in the POM.
   |
   |-->
  <profiles>
    <!-- profile

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