public class MymwDslProposalProvider extends AbstractMymwDslProposalProvider {
        ...
	
	@Override
	protected ConfigurableCompletionProposal doCreateProposal(String proposal,
			StyledString displayString, Image image, int priority,
			ContentAssistContext context) {
		ConfigurableCompletionProposal theproposal = 
				super.doCreateProposal(proposal, displayString, image, priority, context);
		
		theproposal.setAutoInsertable(true);
		
		return theproposal;
	}

}