public void complete_ID(EObject model, RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
		// subclasses may override
	}

public void complete_ID(EObject model, RuleCall ruleCall, final ContentAssistContext context,
			ICompletionProposalAcceptor acceptor) {
		if (doCreateIdProposals()) {
			PrefixMatcher newMatcher = new PrefixMatcher() {
				@Override
				public boolean isCandidateMatchingPrefix(String name, String prefix) {
					String strippedName = name;
					if (name.startsWith("^") && !prefix.startsWith("^")) {
						strippedName = name.substring(1);
					}
					return context.getMatcher().isCandidateMatchingPrefix(strippedName, prefix);
				}
			};
			ContentAssistContext myContext = context.copy().setMatcher(newMatcher).toContext();
			String feature = getAssignedFeature(ruleCall);
			String proposalText = feature != null ? feature : Strings.toFirstUpper(ruleCall.getRule().getName().toLowerCase());
			String displayText = proposalText;
			if (feature != null)
				displayText = proposalText + " - " + ruleCall.getRule().getName();
			proposalText = getValueConverter().toString(proposalText, ruleCall.getRule().getName());
			ICompletionProposal proposal = createCompletionProposal(proposalText, displayText, null, myContext);
			if (proposal instanceof ConfigurableCompletionProposal) {
				ConfigurableCompletionProposal configurable = (ConfigurableCompletionProposal) proposal;
				configurable.setSelectionStart(configurable.getReplacementOffset());
				configurable.setSelectionLength(proposalText.length());
				configurable.setAutoInsertable(false);
				configurable.setSimpleLinkedMode(myContext.getViewer(), '\t', ' ');
			}
			acceptor.accept(proposal);
		}
	}