liferay freemarker portalUtil request add page keywords

pageKeywords.ftl

<#assign PortalUtil = staticUtil["com.liferay.portal.util.PortalUtil"] />
<#assign serviceContext = staticUtil["com.liferay.portal.service.ServiceContextThreadLocal"].getServiceContext()>
<#assign httpServletRequest = serviceContext.getRequest()>
<#if .vars['keywords']??>
    <#assign kWords = .vars['keywords'].getData()>
<#else>
    <#assign kWords = "">
</#if>


${PortalUtil.addPageKeywords(kWords, httpServletRequest)}

<p>
${.vars['texto'].getData()}</p>

<i>${kWords}</i>

pageKeywords.vm

#set ($serviceContext = $portal.getClass().forName("com.liferay.portal.service.ServiceContextThreadLocal").getServiceContext())
#set ($httpServletRequest = $serviceContext.getRequest())

$portalUtil.addPageKeywords($metadata.getData(), $httpServletRequest)
<p>
$texto.getData()
</p>
<i>
$metadata.getData()
</i>