<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="org.eclipse.wst.sse.ui.completionProposal">
      <proposalComputer
            activate="true"
            categoryId="org.eclipse.jst.jsp.ui.proposalCategory.jsp"
            class="testincompletionproposal.CompletionProposalComputer2"
            id="TestinCompletionProposal.proposalComputer2">
         <contentType
               id="jspsource">
         </contentType>
      </proposalComputer>
   </extension>

</plugin>

package testincompletionproposal;

import java.util.List;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.wst.sse.ui.contentassist.CompletionProposalInvocationContext;
import org.eclipse.wst.sse.ui.contentassist.ICompletionProposalComputer;

public class CompletionProposalComputer2 implements ICompletionProposalComputer {

	public void sessionStarted() {
		// TODO Auto-generated method stub

	}

	public List computeCompletionProposals(CompletionProposalInvocationContext context, IProgressMonitor monitor) {

		return null;
	}

	public List computeContextInformation(CompletionProposalInvocationContext context, IProgressMonitor monitor) {
		// TODO Auto-generated method stub
		return null;
	}

	public String getErrorMessage() {
		// TODO Auto-generated method stub
		return null;
	}

	public void sessionEnded() {
		// TODO Auto-generated method stub

	}

}