Spring EL Placeholder to get Host Name

gistfile1.xml

<!-- Used in the Jasig/Cas uniqueIdGenerators.xml file -->
<!-- http://static.springsource.org/spring/docs/3.1.1.RELEASE/spring-framework-reference/html/expressions.html -->
  <bean id="ticketGrantingTicketUniqueIdGenerator" class="org.jasig.cas.util.DefaultUniqueTicketIdGenerator">
    <constructor-arg
      index="0"
      type="int"
      value="50" />
    <constructor-arg
      index="1" value="#{ T(java.net.InetAddress).getLocalHost().getHostName() }" />
  </bean>