maven profiles.xml

Just solved a problem with maven and profiles.xml. The documentation says that the profiles.xml file uses the exact format as the <profiles> element in pom.xml, but this isn't quite true. The <profiles> element is needed, but the documentation neglects to point out that you need to wrap the <profiles> element with a <profilesXml> root element.

<?xml version="1.0" encoding="UTF-8"?>
<profilesXml>
  <profiles>
    <profile>
      <!-- This profile is used by default -->
      <id>default-profile</id>
      <activation>
        <activeByDefault>true</activeByDefault>
      </activation>
      <properties>
        <webapp.port>9090</webapp.port>
        <webapp.admin.port>9999</webapp.admin.port>
      </properties>
    </profile>
  </profiles>
</profilesXml>