Running OpenPortal on Jetty

While running OpenPortal's portlet container on Jetty I've encountered the following error on a portlet deployment attempt:

SEVERE: PSPCD_CSPPD0023
java.lang.IllegalArgumentException: contextHandlerCollection should have been initialized in Jetty config
at com.sun.portal.portletcontainer.admin.deployment.JettyWebAppDeployer.deploy(JettyWebAppDeployer.java:88)
at com.sun.portal.portletcontainer.admin.mbeans.PortletAdmin.deploy(PortletAdmin.java:127)
at com.sun.portal.portletcontainer.driver.admin.PortletAdminDataImpl.deploy(PortletAdminDataImpl.java:78)
at com.sun.portal.portletcontainer.driver.admin.UploadServlet.deployPortlet(UploadServlet.java:149)
at com.sun.portal.portletcontainer.driver.admin.UploadServlet.uploadFile(UploadServlet.java:119)
at com.sun.portal.portletcontainer.driver.admin.UploadServlet.doPost(UploadServlet.java:80)


To fix this, I've added the following lines to my jetty.xml:

<Call 
  class="com.sun.portal.portletcontainer.admin.deployment.JettyWebAppDeployer"  
  name="setHandlerCollection">
    <!-- assuming that Handlers are configured by default -->
    <Arg><Ref id="Handlers"/></Arg>
</Call>

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