plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.7"?>
<plugin>
   <extension
         point="org.eclipse.wst.sse.ui.completionProposal">
      <proposalCategory
            icon="Resources/images/Thymeleaf-Leaf.png"
            id="nz.net.ultraq.eclipse.thymeleaf.proposalCategory.thymeleafProcessors"
            name="Thymeleaf Processor Proposals">
      </proposalCategory>
      <proposalComputer
            activate="true"
            categoryId="nz.net.ultraq.eclipse.thymeleaf.proposalCategory.thymeleafProcessors"
            class="nz.net.ultraq.eclipse.thymeleaf.contentassist.ProcessorCompletionProposalComputer"
            id="nz.net.ultraq.eclipse.thymeleaf.proposalComputer.thymeleafProcessors"
            name="Thymeleaf Processor Proposal Computer">
         <contentType
               id="org.eclipse.wst.html.core.htmlsource">
            <partitionType
                  id="org.eclipse.wst.html.HTML_DEFAULT">
            </partitionType>
         </contentType>
      </proposalComputer>
   </extension>
   <extension
         point="org.eclipse.wst.sse.ui.editorConfiguration">
      <documentationTextHover
            class="nz.net.ultraq.eclipse.thymeleaf.processorinfo.ProcessorInfoHoverComputer"
            target="org.eclipse.wst.html.HTML_DEFAULT">
      </documentationTextHover>
   </extension>

</plugin>