<type>boolean</type>
          <description>Flags this Mojo to be invoked directly only.</description>
          <defaultValue>false</defaultValue>
        </field>
        <field>
          <name>directInvocationOnly</name>
          <version>2.0.0+</version>
          <type>boolean</type>
          <description>Flags this Mojo to be invoked directly only.</description>

  <expressions>
    <expression>
      <syntax>settings.offline</syntax>
      <configuration>
        <![CDATA[
    <offline>true</offline>
    ]]></configuration>
      <description>
        <![CDATA[
      Flags the system as offline, to prevent accessing the network to resolve artifacts or execute plugins.

      NOTE: It's also possible to switch to offline mode on a per-build basis, using the '-o' command-line option.
    ]]></description>