<field>
          <name>url</name>
          <version>4.0.0+</version>
          <required>true</required>
          <description>
            The url of the repository, in the form {@code protocol://hostname/path}.
          </description>
          <type>String</type>
        </field>
        <field>
          <name>layout</name>
          <version>4.0.0+</version>
          <description>

   |-->
  <proxies>
    <!-- proxy
     | Specification for one proxy, to be used in connecting to the network.
     |
    <proxy>
      <id>optional</id>
      <active>true</active>
      <protocol>http</protocol>
      <username>proxyuser</username>
      <password>proxypass</password>
      <host>proxy.host.net</host>
      <port>80</port>
      <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
    </proxy>

            @see #isActive()
          </description>
          <type>String</type>
        </field>
        <field>
          <name>protocol</name>
          <version>1.0.0+</version>
          <description>
            The proxy protocol.
          </description>
          <type>String</type>
          <defaultValue>http</defaultValue>
        </field>
        <field>